151861728 has 48 divisors (see below), whose sum is σ = 399800016. Its totient is φ = 50472960.

The previous prime is 151861691. The next prime is 151861733. The reversal of 151861728 is 827168151.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×151861728² = 46123968862291968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33688 + ... + 37928.

It is an arithmetic number, because the mean of its divisors is an integer number (8329167).

Almost surely, 2^151861728 is an apocalyptic number.

It is an amenable number.

151861728 is an abundant number, since it is smaller than the sum of its proper divisors (247938288).

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

151861728 is a wasteful number, since it uses less digits than its factorization.

151861728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4627 (or 4619 counting only the distinct ones).

The product of its digits is 26880, while the sum is 39.

The square root of 151861728 is about 12323.2190599697. The cubic root of 151861728 is about 533.5184537927.

The spelling of 151861728 in words is "one hundred fifty-one million, eight hundred sixty-one thousand, seven hundred twenty-eight".