72805562 has 8 divisors (see below), whose sum is σ = 109644192. Its totient is φ = 36257500.

The previous prime is 72805553. The next prime is 72805567. The reversal of 72805562 is 26550827.

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

It is not an unprimeable number, because it can be changed into a prime (72805567) 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, 72014 + ... + 73017.

It is an arithmetic number, because the mean of its divisors is an integer number (13705524).

Almost surely, 2^72805562 is an apocalyptic number.

72805562 is a deficient number, since it is larger than the sum of its proper divisors (36838630).

72805562 is a wasteful number, since it uses less digits than its factorization.

72805562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145284.

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 72805562 is about 8532.6175350827. The cubic root of 72805562 is about 417.5625292698.

The spelling of 72805562 in words is "seventy-two million, eight hundred five thousand, five hundred sixty-two".