151620 has 72 divisors (see below), whose sum is σ = 512064. Its totient is φ = 32832.

The previous prime is 151609. The next prime is 151631. The reversal of 151620 is 26151.

151620 = T₁₁₃ + T₁₁₄ + ... + T₁₃₂.

It is an interprime number because it is at equal distance from previous prime (151609) and next prime (151631).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 151620.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7971 + ... + 7989.

It is an arithmetic number, because the mean of its divisors is an integer number (7112).

2¹⁵¹⁶²⁰ is an apocalyptic number.

151620 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 151620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (256032).

151620 is an abundant number, since it is smaller than the sum of its proper divisors (360444).

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

151620 is a wasteful number, since it uses less digits than its factorization.

151620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57 (or 36 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 151620 is about 389.3841291065. The cubic root of 151620 is about 53.3235225009.

Adding to 151620 its reverse (26151), we get a palindrome (177771).

The spelling of 151620 in words is "one hundred fifty-one thousand, six hundred twenty".