29972136 has 32 divisors (see below), whose sum is σ = 76347360. Its totient is φ = 9801792.

The previous prime is 29972123. The next prime is 29972143. The reversal of 29972136 is 63127992.

It is a junction number, because it is equal to n+sod(n) for n = 29972094 and 29972103.

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, 10510 + ... + 13053.

It is an arithmetic number, because the mean of its divisors is an integer number (2385855).

Almost surely, 2^29972136 is an apocalyptic number.

It is an amenable number.

29972136 is an abundant number, since it is smaller than the sum of its proper divisors (46375224).

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

29972136 is a wasteful number, since it uses less digits than its factorization.

29972136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23625 (or 23621 counting only the distinct ones).

The product of its digits is 40824, while the sum is 39.

The square root of 29972136 is about 5474.6813605908. The cubic root of 29972136 is about 310.6270208781.

The spelling of 29972136 in words is "twenty-nine million, nine hundred seventy-two thousand, one hundred thirty-six".