27900357156 has 243 divisors, whose sum is σ = 84965969907. Its totient is φ = 7696926720.

The previous prime is 27900357137. The next prime is 27900357181. The reversal of 27900357156 is 65175300972.

The square root of 27900357156 is 167034.

It is a perfect power (a square), and thus also a powerful number.

27900357156 is a `hidden beast` number, since 2 + 79 + 0 + 0 + 3 + 571 + 5 + 6 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 9291032100 + 18609325056 = 96390^2 + 136416^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 287632500 + ... + 287632596.

Almost surely, 2^27900357156 is an apocalyptic number.

27900357156 is the 167034-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27900357156

27900357156 is an abundant number, since it is smaller than the sum of its proper divisors (57065612751).

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

27900357156 is a wasteful number, since it uses less digits than its factorization.

27900357156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300 (or 150 counting only the distinct ones).

The product of its (nonzero) digits is 396900, while the sum is 45.

The spelling of 27900357156 in words is "twenty-seven billion, nine hundred million, three hundred fifty-seven thousand, one hundred fifty-six".