29972116 has 6 divisors (see below), whose sum is σ = 52451210. Its totient is φ = 14986056.

The previous prime is 29972099. The next prime is 29972119. The reversal of 29972116 is 61127992.

It can be written as a sum of positive squares in only one way, i.e., 28579716 + 1392400 = 5346^2 + 1180^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29972119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3746511 + ... + 3746518.

Almost surely, 2^29972116 is an apocalyptic number.

It is an amenable number.

29972116 is a deficient number, since it is larger than the sum of its proper divisors (22479094).

29972116 is a wasteful number, since it uses less digits than its factorization.

29972116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7493033 (or 7493031 counting only the distinct ones).

The product of its digits is 13608, while the sum is 37.

The square root of 29972116 is about 5474.6795340001. The cubic root of 29972116 is about 310.6269517857.

The spelling of 29972116 in words is "twenty-nine million, nine hundred seventy-two thousand, one hundred sixteen".