72313378 has 8 divisors (see below), whose sum is σ = 108509868. Its totient is φ = 36143424.

The previous prime is 72313363. The next prime is 72313379. The reversal of 72313378 is 87331327.

It can be written as a sum of positive squares in 2 ways, for example, as 72131049 + 182329 = 8493^2 + 427^2 .

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 (72313379) 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, 2950 + ... + 12382.

Almost surely, 2^72313378 is an apocalyptic number.

72313378 is a deficient number, since it is larger than the sum of its proper divisors (36196490).

72313378 is a wasteful number, since it uses less digits than its factorization.

72313378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13268.

The product of its digits is 21168, while the sum is 34.

The square root of 72313378 is about 8503.7273004254. The cubic root of 72313378 is about 416.6194581892.

It can be divided in two parts, 7231 and 3378, that added together give a square (10609 = 103²).

The spelling of 72313378 in words is "seventy-two million, three hundred thirteen thousand, three hundred seventy-eight".