29972392 has 8 divisors (see below), whose sum is σ = 56198250. Its totient is φ = 14986192.

The previous prime is 29972389. The next prime is 29972477. The reversal of 29972392 is 29327992.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 22714756 + 7257636 = 4766^2 + 2694^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 1873267 + ... + 1873282.

Almost surely, 2^29972392 is an apocalyptic number.

It is an amenable number.

29972392 is a deficient number, since it is larger than the sum of its proper divisors (26225858).

29972392 is a wasteful number, since it uses less digits than its factorization.

29972392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3746555 (or 3746551 counting only the distinct ones).

The product of its digits is 122472, while the sum is 43.

The square root of 29972392 is about 5474.7047408970. The cubic root of 29972392 is about 310.6279052583.

The spelling of 29972392 in words is "twenty-nine million, nine hundred seventy-two thousand, three hundred ninety-two".