72323650 has 24 divisors (see below), whose sum is σ = 153740160. Its totient is φ = 24796560.

The previous prime is 72323623. The next prime is 72323663. The reversal of 72323650 is 5632327.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 102970 + ... + 103669.

It is an arithmetic number, because the mean of its divisors is an integer number (6405840).

Almost surely, 2^72323650 is an apocalyptic number.

72323650 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

72323650 is an abundant number, since it is smaller than the sum of its proper divisors (81416510).

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

72323650 is a wasteful number, since it uses less digits than its factorization.

72323650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206658 (or 206653 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 28.

The square root of 72323650 is about 8504.3312494281. The cubic root of 72323650 is about 416.6391839651.

Adding to 72323650 its reverse (5632327), we get a palindrome (77955977).

The spelling of 72323650 in words is "seventy-two million, three hundred twenty-three thousand, six hundred fifty".