72030315 has 16 divisors (see below), whose sum is σ = 131712768. Its totient is φ = 32928096.

The previous prime is 72030307. The next prime is 72030323. The reversal of 72030315 is 51303027.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (72030307) and next prime (72030323).

It is not a de Polignac number, because 72030315 - 2³ = 72030307 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 72030291 and 72030300.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 342897 + ... + 343106.

It is an arithmetic number, because the mean of its divisors is an integer number (8232048).

Almost surely, 2^72030315 is an apocalyptic number.

72030315 is a deficient number, since it is larger than the sum of its proper divisors (59682453).

72030315 is a wasteful number, since it uses less digits than its factorization.

72030315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686018.

The product of its (nonzero) digits is 630, while the sum is 21.

The square root of 72030315 is about 8487.0675147544. The cubic root of 72030315 is about 416.0751432152.

The spelling of 72030315 in words is "seventy-two million, thirty thousand, three hundred fifteen".