126638632 has 16 divisors (see below), whose sum is σ = 237569760. Its totient is φ = 63286704.

The previous prime is 126638597. The next prime is 126638651. The reversal of 126638632 is 236836621.

It is a super-2 number, since 2×126638632² = 32074686229662848, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 126638591 and 126638600.

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, 23013 + ... + 27979.

It is an arithmetic number, because the mean of its divisors is an integer number (14848110).

Almost surely, 2^126638632 is an apocalyptic number.

It is an amenable number.

126638632 is a deficient number, since it is larger than the sum of its proper divisors (110931128).

126638632 is a wasteful number, since it uses less digits than its factorization.

126638632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8160 (or 8156 counting only the distinct ones).

The product of its digits is 62208, while the sum is 37.

The square root of 126638632 is about 11253.3831357508. The cubic root of 126638632 is about 502.1753645194.

The spelling of 126638632 in words is "one hundred twenty-six million, six hundred thirty-eight thousand, six hundred thirty-two".