2155079928 has 16 divisors (see below), whose sum is σ = 5387699880. Its totient is φ = 718359968.

The previous prime is 2155079897. The next prime is 2155079933. The reversal of 2155079928 is 8299705512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44897475 + ... + 44897522.

Almost surely, 2^2155079928 is an apocalyptic number.

It is an amenable number.

2155079928 is an abundant number, since it is smaller than the sum of its proper divisors (3232619952).

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

2155079928 is a wasteful number, since it uses less digits than its factorization.

2155079928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89795006 (or 89795002 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 48.

The square root of 2155079928 is about 46422.8384310998. The cubic root of 2155079928 is about 1291.6785888117.

The spelling of 2155079928 in words is "two billion, one hundred fifty-five million, seventy-nine thousand, nine hundred twenty-eight".