72122486 has 4 divisors (see below), whose sum is σ = 108183732. Its totient is φ = 36061242.

The previous prime is 72122471. The next prime is 72122521. The reversal of 72122486 is 68422127.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

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, 18030620 + ... + 18030623.

It is an arithmetic number, because the mean of its divisors is an integer number (27045933).

Almost surely, 2^72122486 is an apocalyptic number.

72122486 is a deficient number, since it is larger than the sum of its proper divisors (36061246).

72122486 is a wasteful number, since it uses less digits than its factorization.

72122486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36061245.

The product of its digits is 10752, while the sum is 32.

The square root of 72122486 is about 8492.4958639966. The cubic root of 72122486 is about 416.2525394309.

The spelling of 72122486 in words is "seventy-two million, one hundred twenty-two thousand, four hundred eighty-six".