29972275 has 24 divisors (see below), whose sum is σ = 39774240. Its totient is φ = 22325760.

The previous prime is 29972251. The next prime is 29972281. The reversal of 29972275 is 57227992.

It is not a de Polignac number, because 29972275 - 2⁷ = 29972147 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46002 + ... + 46648.

It is an arithmetic number, because the mean of its divisors is an integer number (1657260).

Almost surely, 2^29972275 is an apocalyptic number.

29972275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

29972275 is a deficient number, since it is larger than the sum of its proper divisors (9801965).

29972275 is a wasteful number, since it uses less digits than its factorization.

29972275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783 (or 778 counting only the distinct ones).

The product of its digits is 158760, while the sum is 43.

The square root of 29972275 is about 5474.6940553788. The cubic root of 29972275 is about 310.6275010696.

The spelling of 29972275 in words is "twenty-nine million, nine hundred seventy-two thousand, two hundred seventy-five".