29979428 has 12 divisors (see below), whose sum is σ = 53684400. Its totient is φ = 14641032.

The previous prime is 29979409. The next prime is 29979431. The reversal of 29979428 is 82497992.

It is a super-2 number, since 2×29979428² = 1797532206414368, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86978 + ... + 87321.

It is an arithmetic number, because the mean of its divisors is an integer number (4473700).

Almost surely, 2^29979428 is an apocalyptic number.

It is an amenable number.

29979428 is a deficient number, since it is larger than the sum of its proper divisors (23704972).

29979428 is a wasteful number, since it uses less digits than its factorization.

29979428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174346 (or 174344 counting only the distinct ones).

The product of its digits is 653184, while the sum is 50.

The square root of 29979428 is about 5475.3472949211. The cubic root of 29979428 is about 310.6522099245.

The spelling of 29979428 in words is "twenty-nine million, nine hundred seventy-nine thousand, four hundred twenty-eight".