151515720 has 192 divisors, whose sum is σ = 532396800. Its totient is φ = 37255680.

The previous prime is 151515701. The next prime is 151515737. The reversal of 151515720 is 27515151.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 239805 + ... + 240435.

It is an arithmetic number, because the mean of its divisors is an integer number (2772900).

Almost surely, 2^151515720 is an apocalyptic number.

151515720 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 151515720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (266198400).

151515720 is an abundant number, since it is smaller than the sum of its proper divisors (380881080).

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

151515720 is a wasteful number, since it uses less digits than its factorization.

151515720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700 (or 693 counting only the distinct ones).

The product of its (nonzero) digits is 1750, while the sum is 27.

The square root of 151515720 is about 12309.1721898753. The cubic root of 151515720 is about 533.1129488756.

The spelling of 151515720 in words is "one hundred fifty-one million, five hundred fifteen thousand, seven hundred twenty".