72022641 has 16 divisors (see below), whose sum is σ = 100392960. Its totient is φ = 45873360.

The previous prime is 72022633. The next prime is 72022661. The reversal of 72022641 is 14622027.

It is not a de Polignac number, because 72022641 - 2³ = 72022633 is a prime.

It is a super-2 number, since 2×72022641² = 10374521633229762, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72022661) 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, 2446 + ... + 12248.

It is an arithmetic number, because the mean of its divisors is an integer number (6274560).

Almost surely, 2^72022641 is an apocalyptic number.

It is an amenable number.

72022641 is a deficient number, since it is larger than the sum of its proper divisors (28370319).

72022641 is a wasteful number, since it uses less digits than its factorization.

72022641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9916.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 72022641 is about 8486.6154030921. The cubic root of 72022641 is about 416.0603666865.

Adding to 72022641 its reverse (14622027), we get a palindrome (86644668).

The spelling of 72022641 in words is "seventy-two million, twenty-two thousand, six hundred forty-one".