73721315 has 8 divisors (see below), whose sum is σ = 88996320. Its totient is φ = 58623232.

The previous prime is 73721293. The next prime is 73721327. The reversal of 73721315 is 51312737.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 73721315 - 2⁸ = 73721059 is a prime.

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, 43310 + ... + 44979.

It is an arithmetic number, because the mean of its divisors is an integer number (11124540).

Almost surely, 2^73721315 is an apocalyptic number.

73721315 is a deficient number, since it is larger than the sum of its proper divisors (15275005).

73721315 is a wasteful number, since it uses less digits than its factorization.

73721315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88461.

The product of its digits is 4410, while the sum is 29.

The square root of 73721315 is about 8586.1117509615. Note that the first 3 decimals coincide. The cubic root of 73721315 is about 419.3059493279.

The spelling of 73721315 in words is "seventy-three million, seven hundred twenty-one thousand, three hundred fifteen".