29976813 has 12 divisors (see below), whose sum is σ = 45579040. Its totient is φ = 18932616.

The previous prime is 29976809. The next prime is 29976823. The reversal of 29976813 is 31867992.

It is not a de Polignac number, because 29976813 - 2² = 29976809 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29976823) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 87481 + ... + 87822.

Almost surely, 2^29976813 is an apocalyptic number.

It is an amenable number.

29976813 is a deficient number, since it is larger than the sum of its proper divisors (15602227).

29976813 is a wasteful number, since it uses less digits than its factorization.

29976813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175328 (or 175325 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 29976813 is about 5475.1084920758. The cubic root of 29976813 is about 310.6431772955.

The spelling of 29976813 in words is "twenty-nine million, nine hundred seventy-six thousand, eight hundred thirteen".