72122646 has 8 divisors (see below), whose sum is σ = 144245304. Its totient is φ = 24040880.

The previous prime is 72122639. The next prime is 72122683. The reversal of 72122646 is 64622127.

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

72122646 is an admirable number.

It is a congruent number.

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, 6010215 + ... + 6010226.

It is an arithmetic number, because the mean of its divisors is an integer number (18030663).

Almost surely, 2^72122646 is an apocalyptic number.

72122646 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72122646 is a wasteful number, since it uses less digits than its factorization.

72122646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12020446.

The product of its digits is 8064, while the sum is 30.

The square root of 72122646 is about 8492.5052840725. The cubic root of 72122646 is about 416.2528472422.

The spelling of 72122646 in words is "seventy-two million, one hundred twenty-two thousand, six hundred forty-six".