12772428 has 24 divisors (see below), whose sum is σ = 29908032. Its totient is φ = 4242384.

The previous prime is 12772393. The next prime is 12772433. The reversal of 12772428 is 82427721.

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, 1951 + ... + 5417.

It is an arithmetic number, because the mean of its divisors is an integer number (1246168).

Almost surely, 2^12772428 is an apocalyptic number.

It is an amenable number.

12772428 is an abundant number, since it is smaller than the sum of its proper divisors (17135604).

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

12772428 is a wasteful number, since it uses less digits than its factorization.

12772428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3781 (or 3779 counting only the distinct ones).

The product of its digits is 12544, while the sum is 33.

The square root of 12772428 is about 3573.8533825550. The cubic root of 12772428 is about 233.7533378612.

The spelling of 12772428 in words is "twelve million, seven hundred seventy-two thousand, four hundred twenty-eight".