72220862 has 32 divisors (see below), whose sum is σ = 137998080. Its totient is φ = 27596160.

The previous prime is 72220861. The next prime is 72220909. The reversal of 72220862 is 26802227.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72220861) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 3464 + ... + 12507.

It is an arithmetic number, because the mean of its divisors is an integer number (4312440).

Almost surely, 2^72220862 is an apocalyptic number.

72220862 is a deficient number, since it is larger than the sum of its proper divisors (65777218).

72220862 is a wasteful number, since it uses less digits than its factorization.

72220862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16016.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 72220862 is about 8498.2858271536. The cubic root of 72220862 is about 416.4417113879.

The spelling of 72220862 in words is "seventy-two million, two hundred twenty thousand, eight hundred sixty-two".