29799972 has 36 divisors (see below), whose sum is σ = 75735660. Its totient is φ = 9879552.

The previous prime is 29799971. The next prime is 29799977. The reversal of 29799972 is 27999792.

It can be written as a sum of positive squares in 2 ways, for example, as 18870336 + 10929636 = 4344^2 + 3306^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29799971) 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, 4804 + ... + 9092.

Almost surely, 2^29799972 is an apocalyptic number.

It is an amenable number.

29799972 is an abundant number, since it is smaller than the sum of its proper divisors (45935688).

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

29799972 is a wasteful number, since it uses less digits than its factorization.

29799972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4492 (or 4487 counting only the distinct ones).

The product of its digits is 1285956, while the sum is 54.

The square root of 29799972 is about 5458.9350609803. The cubic root of 29799972 is about 310.0311172371.

The spelling of 29799972 in words is "twenty-nine million, seven hundred ninety-nine thousand, nine hundred seventy-two".