155920080 has 160 divisors (see below), whose sum is σ = 525680640. Its totient is φ = 38085120.

The previous prime is 155920057. The next prime is 155920091. The reversal of 155920080 is 80029551.

It is a super-2 number, since 2×155920080² = 48622142694412800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 140809 + ... + 141911.

It is an arithmetic number, because the mean of its divisors is an integer number (3285504).

Almost surely, 2^155920080 is an apocalyptic number.

155920080 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 155920080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (262840320).

155920080 is an abundant number, since it is smaller than the sum of its proper divisors (369760560).

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

155920080 is a wasteful number, since it uses less digits than its factorization.

155920080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1169 (or 1163 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 30.

The square root of 155920080 is about 12486.7962264145. The cubic root of 155920080 is about 538.2293167980.

The spelling of 155920080 in words is "one hundred fifty-five million, nine hundred twenty thousand, eighty".