72422996 has 6 divisors (see below), whose sum is σ = 126740250. Its totient is φ = 36211496.

The previous prime is 72422989. The next prime is 72423011. The reversal of 72422996 is 69922427.

It can be written as a sum of positive squares in only one way, i.e., 40500496 + 31922500 = 6364^2 + 5650^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9052871 + ... + 9052878.

It is an arithmetic number, because the mean of its divisors is an integer number (21123375).

Almost surely, 2^72422996 is an apocalyptic number.

It is an amenable number.

72422996 is a deficient number, since it is larger than the sum of its proper divisors (54317254).

72422996 is a wasteful number, since it uses less digits than its factorization.

72422996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18105753 (or 18105751 counting only the distinct ones).

The product of its digits is 108864, while the sum is 41.

The square root of 72422996 is about 8510.1701510604. The cubic root of 72422996 is about 416.8298661676.

The spelling of 72422996 in words is "seventy-two million, four hundred twenty-two thousand, nine hundred ninety-six".