72266590 has 32 divisors (see below), whose sum is σ = 142321536. Its totient is φ = 26201760.

The previous prime is 72266561. The next prime is 72266591. The reversal of 72266590 is 9566227.

It is a super-3 number, since 3×72266590³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72266591) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47989 + ... + 49471.

It is an arithmetic number, because the mean of its divisors is an integer number (4447548).

Almost surely, 2^72266590 is an apocalyptic number.

72266590 is a deficient number, since it is larger than the sum of its proper divisors (70054946).

72266590 is a wasteful number, since it uses less digits than its factorization.

72266590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1944.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 72266590 is about 8500.9758263390. The cubic root of 72266590 is about 416.5295854837.

It can be divided in two parts, 72 and 266590, that added together give a palindrome (266662).

The spelling of 72266590 in words is "seventy-two million, two hundred sixty-six thousand, five hundred ninety".