29823990 has 32 divisors (see below), whose sum is σ = 81803520. Its totient is φ = 6816864.

The previous prime is 29823971. The next prime is 29824007. The reversal of 29823990 is 9932892.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70800 + ... + 71219.

It is an arithmetic number, because the mean of its divisors is an integer number (2556360).

Almost surely, 2^29823990 is an apocalyptic number.

29823990 is an abundant number, since it is smaller than the sum of its proper divisors (51979530).

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

29823990 is a wasteful number, since it uses less digits than its factorization.

29823990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142036.

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 29823990 is about 5461.1344975197. The cubic root of 29823990 is about 310.1143872008.

The spelling of 29823990 in words is "twenty-nine million, eight hundred twenty-three thousand, nine hundred ninety".