30500645 has 16 divisors (see below), whose sum is σ = 43649280. Its totient is φ = 20004864.

The previous prime is 30500627. The next prime is 30500689. The reversal of 30500645 is 54600503.

It is a cyclic number.

It is not a de Polignac number, because 30500645 - 2¹⁰ = 30499621 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a self number, because there is not a number n which added to its sum of digits gives 30500645.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18140 + ... + 19749.

It is an arithmetic number, because the mean of its divisors is an integer number (2728080).

Almost surely, 2^30500645 is an apocalyptic number.

30500645 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

30500645 is a deficient number, since it is larger than the sum of its proper divisors (13148635).

30500645 is a wasteful number, since it uses less digits than its factorization.

30500645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37924.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 30500645 is about 5522.7389038411. The cubic root of 30500645 is about 312.4421909066.

The spelling of 30500645 in words is "thirty million, five hundred thousand, six hundred forty-five".