72030345 has 16 divisors (see below), whose sum is σ = 119223360. Its totient is φ = 37091264.

The previous prime is 72030337. The next prime is 72030359. The reversal of 72030345 is 54303027.

It is a cyclic number.

It is not a de Polignac number, because 72030345 - 2³ = 72030337 is a prime.

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, 82359 + ... + 83228.

It is an arithmetic number, because the mean of its divisors is an integer number (7451460).

Almost surely, 2^72030345 is an apocalyptic number.

It is an amenable number.

72030345 is a deficient number, since it is larger than the sum of its proper divisors (47193015).

72030345 is a wasteful number, since it uses less digits than its factorization.

72030345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165624.

The product of its (nonzero) digits is 2520, while the sum is 24.

The square root of 72030345 is about 8487.0692821492. The cubic root of 72030345 is about 416.0752009791.

The spelling of 72030345 in words is "seventy-two million, thirty thousand, three hundred forty-five".