72315514 has 4 divisors (see below), whose sum is σ = 108473274. Its totient is φ = 36157756.

The previous prime is 72315497. The next prime is 72315517. The reversal of 72315514 is 41551327.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 49914225 + 22401289 = 7065^2 + 4733^2 .

It is not an unprimeable number, because it can be changed into a prime (72315517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18078877 + ... + 18078880.

Almost surely, 2^72315514 is an apocalyptic number.

72315514 is a deficient number, since it is larger than the sum of its proper divisors (36157760).

72315514 is a wasteful number, since it uses less digits than its factorization.

72315514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36157759.

The product of its digits is 4200, while the sum is 28.

The square root of 72315514 is about 8503.8528914840. The cubic root of 72315514 is about 416.6235601983.

The spelling of 72315514 in words is "seventy-two million, three hundred fifteen thousand, five hundred fourteen".