29720404 has 24 divisors (see below), whose sum is σ = 59649408. Its totient is φ = 12692640.

The previous prime is 29720401. The next prime is 29720419. The reversal of 29720404 is 40402792.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29720401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7002 + ... + 10414.

It is an arithmetic number, because the mean of its divisors is an integer number (2485392).

Almost surely, 2^29720404 is an apocalyptic number.

It is an amenable number.

29720404 is an abundant number, since it is smaller than the sum of its proper divisors (29929004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

29720404 is a wasteful number, since it uses less digits than its factorization.

29720404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3735 (or 3733 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 29720404 is about 5451.6423213560. The cubic root of 29720404 is about 309.7549363943.

The spelling of 29720404 in words is "twenty-nine million, seven hundred twenty thousand, four hundred four".