72330290 has 8 divisors (see below), whose sum is σ = 130194540. Its totient is φ = 28932112.

The previous prime is 72330289. The next prime is 72330317. The reversal of 72330290 is 9203327.

It can be written as a sum of positive squares in 2 ways, for example, as 58721569 + 13608721 = 7663^2 + 3689^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3616505 + ... + 3616524.

Almost surely, 2^72330290 is an apocalyptic number.

72330290 is a deficient number, since it is larger than the sum of its proper divisors (57864250).

72330290 is a wasteful number, since it uses less digits than its factorization.

72330290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7233036.

The product of its (nonzero) digits is 2268, while the sum is 26.

The square root of 72330290 is about 8504.7216297772. The cubic root of 72330290 is about 416.6519340569.

It can be divided in two parts, 723 and 30290, that added together give a palindrome (31013).

The spelling of 72330290 in words is "seventy-two million, three hundred thirty thousand, two hundred ninety".