29970423 has 12 divisors (see below), whose sum is σ = 49475088. Its totient is φ = 17125920.

The previous prime is 29970419. The next prime is 29970431. The reversal of 29970423 is 32407992.

It is not a de Polignac number, because 29970423 - 2² = 29970419 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29970433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 237798 + ... + 237923.

It is an arithmetic number, because the mean of its divisors is an integer number (4122924).

Almost surely, 2^29970423 is an apocalyptic number.

29970423 is a deficient number, since it is larger than the sum of its proper divisors (19504665).

29970423 is a wasteful number, since it uses less digits than its factorization.

29970423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475734 (or 475731 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 29970423 is about 5474.5249108941. The cubic root of 29970423 is about 310.6211030013.

The spelling of 29970423 in words is "twenty-nine million, nine hundred seventy thousand, four hundred twenty-three".