29992090 has 16 divisors (see below), whose sum is σ = 55847880. Its totient is φ = 11583040.

The previous prime is 29992087. The next prime is 29992093. The reversal of 29992090 is 9029992.

It is an interprime number because it is at equal distance from previous prime (29992087) and next prime (29992093).

It can be written as a sum of positive squares in 4 ways, for example, as 22953681 + 7038409 = 4791^2 + 2653^2 .

It is not an unprimeable number, because it can be changed into a prime (29992093) 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, 51421 + ... + 52000.

Almost surely, 2^29992090 is an apocalyptic number.

29992090 is a deficient number, since it is larger than the sum of its proper divisors (25855790).

29992090 is a wasteful number, since it uses less digits than its factorization.

29992090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103457.

The product of its (nonzero) digits is 26244, while the sum is 40.

The square root of 29992090 is about 5476.5034465432. The cubic root of 29992090 is about 310.6959390736.

The spelling of 29992090 in words is "twenty-nine million, nine hundred ninety-two thousand, ninety".