72090650 has 24 divisors (see below), whose sum is σ = 134348544. Its totient is φ = 28780400.

The previous prime is 72090619. The next prime is 72090673. The reversal of 72090650 is 5609027.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33095 + ... + 35205.

It is an arithmetic number, because the mean of its divisors is an integer number (5597856).

Almost surely, 2^72090650 is an apocalyptic number.

72090650 is a deficient number, since it is larger than the sum of its proper divisors (62257894).

72090650 is a wasteful number, since it uses less digits than its factorization.

72090650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2806 (or 2801 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 72090650 is about 8490.6212964659. The cubic root of 72090650 is about 416.1912836103.

Adding to 72090650 its reverse (5609027), we get a palindrome (77699677).

The spelling of 72090650 in words is "seventy-two million, ninety thousand, six hundred fifty".