72522406 has 8 divisors (see below), whose sum is σ = 118673064. Its totient is φ = 32964720.

The previous prime is 72522397. The next prime is 72522407. The reversal of 72522406 is 60422527.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72522407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1648215 + ... + 1648258.

It is an arithmetic number, because the mean of its divisors is an integer number (14834133).

Almost surely, 2^72522406 is an apocalyptic number.

72522406 is a deficient number, since it is larger than the sum of its proper divisors (46150658).

72522406 is a wasteful number, since it uses less digits than its factorization.

72522406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3296486.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 72522406 is about 8516.0088069471. The cubic root of 72522406 is about 417.0204967430.

The spelling of 72522406 in words is "seventy-two million, five hundred twenty-two thousand, four hundred six".