72823290 has 32 divisors (see below), whose sum is σ = 182376576. Its totient is φ = 18575040.

The previous prime is 72823273. The next prime is 72823297. The reversal of 72823290 is 9232827.

It is not an unprimeable number, because it can be changed into a prime (72823297) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52081 + ... + 53460.

It is an arithmetic number, because the mean of its divisors is an integer number (5699268).

Almost surely, 2^72823290 is an apocalyptic number.

72823290 is an abundant number, since it is smaller than the sum of its proper divisors (109553286).

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

72823290 is a wasteful number, since it uses less digits than its factorization.

72823290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105574.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 72823290 is about 8533.6563089921. The cubic root of 72823290 is about 417.5964183828.

The spelling of 72823290 in words is "seventy-two million, eight hundred twenty-three thousand, two hundred ninety".