72253478 has 16 divisors (see below), whose sum is σ = 118679040. Its totient is φ = 32718600.

The previous prime is 72253477. The next prime is 72253513. The reversal of 72253478 is 87435227.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72253477) 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, 98 + ... + 12021.

It is an arithmetic number, because the mean of its divisors is an integer number (7417440).

Almost surely, 2^72253478 is an apocalyptic number.

72253478 is a deficient number, since it is larger than the sum of its proper divisors (46425562).

72253478 is a wasteful number, since it uses less digits than its factorization.

72253478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12403.

The product of its digits is 94080, while the sum is 38.

The square root of 72253478 is about 8500.2045857732. The cubic root of 72253478 is about 416.5043923469.

The spelling of 72253478 in words is "seventy-two million, two hundred fifty-three thousand, four hundred seventy-eight".