72873770 has 16 divisors (see below), whose sum is σ = 131404680. Its totient is φ = 29097984.

The previous prime is 72873767. The next prime is 72873799. The reversal of 72873770 is 7737827.

It can be written as a sum of positive squares in 4 ways, for example, as 68740681 + 4133089 = 8291^2 + 2033^2 .

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, 215 + ... + 12074.

Almost surely, 2^72873770 is an apocalyptic number.

72873770 is a deficient number, since it is larger than the sum of its proper divisors (58530910).

72873770 is a wasteful number, since it uses less digits than its factorization.

72873770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12889.

The product of its (nonzero) digits is 115248, while the sum is 41.

The square root of 72873770 is about 8536.6134971662. The cubic root of 72873770 is about 417.6928865971.

The spelling of 72873770 in words is "seventy-two million, eight hundred seventy-three thousand, seven hundred seventy".