126557228 has 12 divisors (see below), whose sum is σ = 253114512. Its totient is φ = 54238800.

The previous prime is 126557219. The next prime is 126557243. The reversal of 126557228 is 822755621.

126557228 is an admirable number.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 126557191 and 126557200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2259923 + ... + 2259978.

It is an arithmetic number, because the mean of its divisors is an integer number (21092876).

Almost surely, 2^126557228 is an apocalyptic number.

It is an amenable number.

126557228 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

126557228 is a wasteful number, since it uses less digits than its factorization.

126557228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4519912 (or 4519910 counting only the distinct ones).

The product of its digits is 67200, while the sum is 38.

The square root of 126557228 is about 11249.7656864488. The cubic root of 126557228 is about 502.0677411058.

The spelling of 126557228 in words is "one hundred twenty-six million, five hundred fifty-seven thousand, two hundred twenty-eight".