155970980 has 24 divisors (see below), whose sum is σ = 357315840. Its totient is φ = 56716640.

The previous prime is 155970977. The next prime is 155971001. The reversal of 155970980 is 89079551.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (44).

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, 354260 + ... + 354699.

It is an arithmetic number, because the mean of its divisors is an integer number (14888160).

Almost surely, 2^155970980 is an apocalyptic number.

155970980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155970980 is an abundant number, since it is smaller than the sum of its proper divisors (201344860).

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

155970980 is a wasteful number, since it uses less digits than its factorization.

155970980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708979 (or 708977 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 44.

The square root of 155970980 is about 12488.8342130080. The cubic root of 155970980 is about 538.2878786194.

The spelling of 155970980 in words is "one hundred fifty-five million, nine hundred seventy thousand, nine hundred eighty".