72925778 has 16 divisors (see below), whose sum is σ = 118082880. Its totient is φ = 33674256.

The previous prime is 72925777. The next prime is 72925817. The reversal of 72925778 is 87752927.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (72925771) 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, 26000 + ... + 28667.

It is an arithmetic number, because the mean of its divisors is an integer number (7380180).

Almost surely, 2^72925778 is an apocalyptic number.

72925778 is a deficient number, since it is larger than the sum of its proper divisors (45157102).

72925778 is a wasteful number, since it uses less digits than its factorization.

72925778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54721.

The product of its digits is 493920, while the sum is 47.

The square root of 72925778 is about 8539.6591266865. The cubic root of 72925778 is about 417.7922282665.

The spelling of 72925778 in words is "seventy-two million, nine hundred twenty-five thousand, seven hundred seventy-eight".