72244022 has 4 divisors (see below), whose sum is σ = 108366036. Its totient is φ = 36122010.

The previous prime is 72243979. The next prime is 72244027. The reversal of 72244022 is 22044227.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22044227 = 229 ⋅96263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72244027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18061004 + ... + 18061007.

It is an arithmetic number, because the mean of its divisors is an integer number (27091509).

Almost surely, 2^72244022 is an apocalyptic number.

72244022 is a deficient number, since it is larger than the sum of its proper divisors (36122014).

72244022 is a wasteful number, since it uses less digits than its factorization.

72244022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36122013.

The product of its (nonzero) digits is 1792, while the sum is 23.

The square root of 72244022 is about 8499.6483456670. The cubic root of 72244022 is about 416.4862218843.

Adding to 72244022 its reverse (22044227), we get a palindrome (94288249).

It can be divided in two parts, 722 and 44022, that added together give a palindrome (44744).

The spelling of 72244022 in words is "seventy-two million, two hundred forty-four thousand, twenty-two".