155872000 has 72 divisors (see below), whose sum is σ = 388376352. Its totient is φ = 62336000.

The previous prime is 155871983. The next prime is 155872007. The reversal of 155872000 is 278551.

It is a self number, because there is not a number n which added to its sum of digits gives 155872000.

It is not an unprimeable number, because it can be changed into a prime (155872007) 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, 29565 + ... + 34435.

It is an arithmetic number, because the mean of its divisors is an integer number (5394116).

Almost surely, 2^155872000 is an apocalyptic number.

155872000 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 155872000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194188176).

155872000 is an abundant number, since it is smaller than the sum of its proper divisors (232504352).

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

155872000 is an frugal number, since it uses more digits than its factorization.

155872000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4902 (or 4878 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 28.

The square root of 155872000 is about 12484.8708443460. The cubic root of 155872000 is about 538.1739877560.

The spelling of 155872000 in words is "one hundred fifty-five million, eight hundred seventy-two thousand".