72356945 has 8 divisors (see below), whose sum is σ = 89629440. Its totient is φ = 56018160.

The previous prime is 72356939. The next prime is 72356953. The reversal of 72356945 is 54965327.

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

It is not a de Polignac number, because 72356945 - 2¹⁸ = 72094801 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 233255 + ... + 233564.

It is an arithmetic number, because the mean of its divisors is an integer number (11203680).

Almost surely, 2^72356945 is an apocalyptic number.

It is an amenable number.

72356945 is a deficient number, since it is larger than the sum of its proper divisors (17272495).

72356945 is a wasteful number, since it uses less digits than its factorization.

72356945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466855.

The product of its digits is 226800, while the sum is 41.

The square root of 72356945 is about 8506.2885561213. The cubic root of 72356945 is about 416.7031089904.

The spelling of 72356945 in words is "seventy-two million, three hundred fifty-six thousand, nine hundred forty-five".