28057762408 has 16 divisors (see below), whose sum is σ = 56655097380. Its totient is φ = 12949736448.

The previous prime is 28057762367. The next prime is 28057762409. The reversal of 28057762408 is 80426775082.

It can be written as a sum of positive squares in 2 ways, for example, as 27304918564 + 752843844 = 165242^2 + 27438^2 .

It is not an unprimeable number, because it can be changed into a prime (28057762409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134892985 + ... + 134893192.

Almost surely, 2^28057762408 is an apocalyptic number.

It is an amenable number.

28057762408 is an abundant number, since it is smaller than the sum of its proper divisors (28597334972).

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

28057762408 is a wasteful number, since it uses less digits than its factorization.

28057762408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269786196 (or 269786192 counting only the distinct ones).

The product of its (nonzero) digits is 1505280, while the sum is 49.

The spelling of 28057762408 in words is "twenty-eight billion, fifty-seven million, seven hundred sixty-two thousand, four hundred eight".