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157480 = 23531127
BaseRepresentation
bin100110011100101000
322000000121
4212130220
520014410
63213024
71224061
oct463450
9260017
10157480
11a8354
1277174
13568ab
1441568
15319da
hex26728

157480 has 32 divisors (see below), whose sum is σ = 368640. Its totient is φ = 60480.

The previous prime is 157477. The next prime is 157483. The reversal of 157480 is 84751.

It is an interprime number because it is at equal distance from previous prime (157477) and next prime (157483).

It is a Smith number, since the sum of its digits (25) coincides with the sum of the digits of its prime factors.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (157483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1177 + ... + 1303.

It is an arithmetic number, because the mean of its divisors is an integer number (11520).

2157480 is an apocalyptic number.

157480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 157480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184320).

157480 is an abundant number, since it is smaller than the sum of its proper divisors (211160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

157480 is a wasteful number, since it uses less digits than its factorization.

157480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169 (or 165 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 157480 is about 396.8374982282. The cubic root of 157480 is about 54.0018289275.

The spelling of 157480 in words is "one hundred fifty-seven thousand, four hundred eighty".

Divisors: 1 2 4 5 8 10 20 31 40 62 124 127 155 248 254 310 508 620 635 1016 1240 1270 2540 3937 5080 7874 15748 19685 31496 39370 78740 157480