73236290 has 16 divisors (see below), whose sum is σ = 131925240. Its totient is φ = 29272320.

The previous prime is 73236271. The next prime is 73236299. The reversal of 73236290 is 9263237.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 72607441 + 628849 = 8521^2 + 793^2 .

It is not an unprimeable number, because it can be changed into a prime (73236299) 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, 19916 + ... + 23304.

Almost surely, 2^73236290 is an apocalyptic number.

73236290 is a deficient number, since it is larger than the sum of its proper divisors (58688950).

73236290 is a wasteful number, since it uses less digits than its factorization.

73236290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5557.

The product of its (nonzero) digits is 13608, while the sum is 32.

The square root of 73236290 is about 8557.8204000785. The cubic root of 73236290 is about 418.3843636878.

The spelling of 73236290 in words is "seventy-three million, two hundred thirty-six thousand, two hundred ninety".