72244866 has 16 divisors (see below), whose sum is σ = 152989344. Its totient is φ = 22665024.

The previous prime is 72244847. The next prime is 72244867. The reversal of 72244866 is 66844227.

It is not an unprimeable number, because it can be changed into a prime (72244867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 354040 + ... + 354243.

It is an arithmetic number, because the mean of its divisors is an integer number (9561834).

Almost surely, 2^72244866 is an apocalyptic number.

72244866 is an abundant number, since it is smaller than the sum of its proper divisors (80744478).

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

72244866 is a wasteful number, since it uses less digits than its factorization.

72244866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 708305.

The product of its digits is 129024, while the sum is 39.

The square root of 72244866 is about 8499.6979946349. The cubic root of 72244866 is about 416.4878437624.

It can be divided in two parts, 7224 and 4866, that added together give a triangular number (12090 = T₁₅₅).

The spelling of 72244866 in words is "seventy-two million, two hundred forty-four thousand, eight hundred sixty-six".