51426228 has 24 divisors (see below), whose sum is σ = 137136832. Its totient is φ = 14693184.

The previous prime is 51426211. The next prime is 51426239. The reversal of 51426228 is 82262415.

It is a junction number, because it is equal to n+sod(n) for n = 51426195 and 51426204.

It is a congruent number.

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, 306025 + ... + 306192.

Almost surely, 2^51426228 is an apocalyptic number.

It is an amenable number.

51426228 is an abundant number, since it is smaller than the sum of its proper divisors (85710604).

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

51426228 is a wasteful number, since it uses less digits than its factorization.

51426228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612231 (or 612229 counting only the distinct ones).

The product of its digits is 7680, while the sum is 30.

The square root of 51426228 is about 7171.2082663942. The cubic root of 51426228 is about 371.8732080322.

The spelling of 51426228 in words is "fifty-one million, four hundred twenty-six thousand, two hundred twenty-eight".