29889428 has 12 divisors (see below), whose sum is σ = 52422720. Its totient is φ = 14911512.

The previous prime is 29889421. The next prime is 29889439. The reversal of 29889428 is 82498892.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29889421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6218 + ... + 9921.

It is an arithmetic number, because the mean of its divisors is an integer number (4368560).

Almost surely, 2^29889428 is an apocalyptic number.

It is an amenable number.

29889428 is a deficient number, since it is larger than the sum of its proper divisors (22533292).

29889428 is a wasteful number, since it uses less digits than its factorization.

29889428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16606 (or 16604 counting only the distinct ones).

The product of its digits is 663552, while the sum is 50.

The square root of 29889428 is about 5467.1224606734. The cubic root of 29889428 is about 310.3410329452.

The spelling of 29889428 in words is "twenty-nine million, eight hundred eighty-nine thousand, four hundred twenty-eight".