72945858 has 16 divisors (see below), whose sum is σ = 145992096. Its totient is φ = 24298560.

The previous prime is 72945853. The next prime is 72945863. The reversal of 72945858 is 85854927.

It is an interprime number because it is at equal distance from previous prime (72945853) and next prime (72945863).

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (72945853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7993 + ... + 14483.

It is an arithmetic number, because the mean of its divisors is an integer number (9124506).

Almost surely, 2^72945858 is an apocalyptic number.

72945858 is an abundant number, since it is smaller than the sum of its proper divisors (73046238).

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

72945858 is a wasteful number, since it uses less digits than its factorization.

72945858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8369.

The product of its digits is 806400, while the sum is 48.

The square root of 72945858 is about 8540.8347367222. The cubic root of 72945858 is about 417.8305708952.

The spelling of 72945858 in words is "seventy-two million, nine hundred forty-five thousand, eight hundred fifty-eight".