2157016328 has 8 divisors (see below), whose sum is σ = 4044405630. Its totient is φ = 1078508160.

The previous prime is 2157016247. The next prime is 2157016331. The reversal of 2157016328 is 8236107512.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2025180004 + 131836324 = 45002^2 + 11482^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134813513 + ... + 134813528.

Almost surely, 2^2157016328 is an apocalyptic number.

It is an amenable number.

2157016328 is a deficient number, since it is larger than the sum of its proper divisors (1887389302).

2157016328 is a wasteful number, since it uses less digits than its factorization.

2157016328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269627047 (or 269627043 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 2157016328 is about 46443.6898620254. The cubic root of 2157016328 is about 1292.0653428598.

The spelling of 2157016328 in words is "two billion, one hundred fifty-seven million, sixteen thousand, three hundred twenty-eight".