2156867528 has 8 divisors (see below), whose sum is σ = 4044126630. Its totient is φ = 1078433760.

The previous prime is 2156867519. The next prime is 2156867533. The reversal of 2156867528 is 8257686512.

It can be written as a sum of positive squares in only one way, i.e., 1169776804 + 987090724 = 34202^2 + 31418^2 .

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, 134804213 + ... + 134804228.

Almost surely, 2^2156867528 is an apocalyptic number.

It is an amenable number.

2156867528 is a deficient number, since it is larger than the sum of its proper divisors (1887259102).

2156867528 is a wasteful number, since it uses less digits than its factorization.

2156867528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269608447 (or 269608443 counting only the distinct ones).

The product of its digits is 1612800, while the sum is 50.

The square root of 2156867528 is about 46442.0878944950. The cubic root of 2156867528 is about 1292.0356314877.

The spelling of 2156867528 in words is "two billion, one hundred fifty-six million, eight hundred sixty-seven thousand, five hundred twenty-eight".