72320954 has 48 divisors (see below), whose sum is σ = 123751680. Its totient is φ = 31570560.

The previous prime is 72320953. The next prime is 72320987. The reversal of 72320954 is 45902327.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 72320954.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72320953) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 990662 + ... + 990734.

It is an arithmetic number, because the mean of its divisors is an integer number (2578160).

Almost surely, 2^72320954 is an apocalyptic number.

72320954 is a deficient number, since it is larger than the sum of its proper divisors (51430726).

72320954 is a wasteful number, since it uses less digits than its factorization.

72320954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183 (or 154 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 72320954 is about 8504.1727404845. The cubic root of 72320954 is about 416.6340068979.

The spelling of 72320954 in words is "seventy-two million, three hundred twenty thousand, nine hundred fifty-four".