126513644 has 6 divisors (see below), whose sum is σ = 221398884. Its totient is φ = 63256820.

The previous prime is 126513617. The next prime is 126513713. The reversal of 126513644 is 446315621.

It is a self number, because there is not a number n which added to its sum of digits gives 126513644.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15814202 + ... + 15814209.

It is an arithmetic number, because the mean of its divisors is an integer number (36899814).

Almost surely, 2^126513644 is an apocalyptic number.

It is an amenable number.

126513644 is a deficient number, since it is larger than the sum of its proper divisors (94885240).

126513644 is a wasteful number, since it uses less digits than its factorization.

126513644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31628415 (or 31628413 counting only the distinct ones).

The product of its digits is 17280, while the sum is 32.

The square root of 126513644 is about 11247.8284126315. The cubic root of 126513644 is about 502.0101001656.

The spelling of 126513644 in words is "one hundred twenty-six million, five hundred thirteen thousand, six hundred forty-four".