72422572 has 12 divisors (see below), whose sum is σ = 130828096. Its totient is φ = 35043120.

The previous prime is 72422569. The next prime is 72422591. The reversal of 72422572 is 27522427.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 291903 + ... + 292150.

Almost surely, 2^72422572 is an apocalyptic number.

It is an amenable number.

72422572 is a deficient number, since it is larger than the sum of its proper divisors (58405524).

72422572 is a wasteful number, since it uses less digits than its factorization.

72422572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584088 (or 584086 counting only the distinct ones).

The product of its digits is 15680, while the sum is 31.

The square root of 72422572 is about 8510.1452396537. The cubic root of 72422572 is about 416.8290527234.

Adding to 72422572 its reverse (27522427), we get a palindrome (99944999).

The spelling of 72422572 in words is "seventy-two million, four hundred twenty-two thousand, five hundred seventy-two".