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245972 = 2261493
BaseRepresentation
bin111100000011010100
3110111102002
4330003110
530332342
65134432
72043056
oct740324
9414362
10245972
11158891
12ba418
1387c5c
14658d6
154cd32
hex3c0d4

245972 has 6 divisors (see below), whose sum is σ = 430458. Its totient is φ = 122984.

The previous prime is 245963. The next prime is 245977. The reversal of 245972 is 279542.

It can be written as a sum of positive squares in only one way, i.e., 244036 + 1936 = 494^2 + 44^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245977) by changing a digit.

245972 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30743 + ... + 30750.

It is an arithmetic number, because the mean of its divisors is an integer number (71743).

2245972 is an apocalyptic number.

It is an amenable number.

245972 is a deficient number, since it is larger than the sum of its proper divisors (184486).

245972 is a wasteful number, since it uses less digits than its factorization.

245972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61497 (or 61495 counting only the distinct ones).

The product of its digits is 5040, while the sum is 29.

The square root of 245972 is about 495.9556431779. The cubic root of 245972 is about 62.6558881920.

It can be divided in two parts, 24597 and 2, that multiplied together give a palindrome (49194).

The spelling of 245972 in words is "two hundred forty-five thousand, nine hundred seventy-two".

Divisors: 1 2 4 61493 122986 245972