252726428 has 12 divisors (see below), whose sum is σ = 454224792. Its totient is φ = 122947920.

The previous prime is 252726401. The next prime is 252726443. The reversal of 252726428 is 824627252.

It is a junction number, because it is equal to n+sod(n) for n = 252726391 and 252726400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 853658 + ... + 853953.

It is an arithmetic number, because the mean of its divisors is an integer number (37852066).

Almost surely, 2^252726428 is an apocalyptic number.

It is an amenable number.

252726428 is a deficient number, since it is larger than the sum of its proper divisors (201498364).

252726428 is a wasteful number, since it uses less digits than its factorization.

252726428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1707652 (or 1707650 counting only the distinct ones).

The product of its digits is 107520, while the sum is 38.

The square root of 252726428 is about 15897.3717324594. The cubic root of 252726428 is about 632.2423061436.

The spelling of 252726428 in words is "two hundred fifty-two million, seven hundred twenty-six thousand, four hundred twenty-eight".