28747357250 has 16 divisors (see below), whose sum is σ = 53815053240. Its totient is φ = 11498942800.

The previous prime is 28747357241. The next prime is 28747357267. The reversal of 28747357250 is 5275374782.

It can be written as a sum of positive squares in 4 ways, for example, as 5316013921 + 23431343329 = 72911^2 + 153073^2 .

It is a Harshad number since it is a multiple of its sum of digits (50).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57494465 + ... + 57494964.

Almost surely, 2^28747357250 is an apocalyptic number.

28747357250 is a deficient number, since it is larger than the sum of its proper divisors (25067695990).

28747357250 is a wasteful number, since it uses less digits than its factorization.

28747357250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114989446 (or 114989436 counting only the distinct ones).

The product of its (nonzero) digits is 3292800, while the sum is 50.

The spelling of 28747357250 in words is "twenty-eight billion, seven hundred forty-seven million, three hundred fifty-seven thousand, two hundred fifty".