72365650 has 36 divisors (see below), whose sum is σ = 156580938. Its totient is φ = 24810240.

The previous prime is 72365641. The next prime is 72365669. The reversal of 72365650 is 5656327.

It can be written as a sum of positive squares in 3 ways, for example, as 27489049 + 44876601 = 5243^2 + 6699^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 12319 + ... + 17218.

Almost surely, 2^72365650 is an apocalyptic number.

72365650 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

72365650 is an abundant number, since it is smaller than the sum of its proper divisors (84215288).

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

72365650 is a wasteful number, since it uses less digits than its factorization.

72365650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29563 (or 29551 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 34.

The square root of 72365650 is about 8506.8002209997. The cubic root of 72365650 is about 416.7198189971.

The spelling of 72365650 in words is "seventy-two million, three hundred sixty-five thousand, six hundred fifty".