252780000028 has 6 divisors (see below), whose sum is σ = 442365000056. Its totient is φ = 126390000012.

The previous prime is 252780000001. The next prime is 252780000059. The reversal of 252780000028 is 820000087252.

It is a junction number, because it is equal to n+sod(n) for n = 252779999948 and 252780000002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31597500000 + ... + 31597500007.

Almost surely, 2^252780000028 is an apocalyptic number.

It is an amenable number.

252780000028 is a deficient number, since it is larger than the sum of its proper divisors (189585000028).

252780000028 is a wasteful number, since it uses less digits than its factorization.

252780000028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63195000011 (or 63195000009 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 34.

The spelling of 252780000028 in words is "two hundred fifty-two billion, seven hundred eighty million, twenty-eight", and thus it is an aban number.