30022923 has 16 divisors (see below), whose sum is σ = 46330880. Its totient is φ = 16937856.

The previous prime is 30022913. The next prime is 30022943. The reversal of 30022923 is 32922003.

It is not a de Polignac number, because 30022923 - 2⁸ = 30022667 is a prime.

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

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30022923.

It is not an unprimeable number, because it can be changed into a prime (30022903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7390 + ... + 10707.

It is an arithmetic number, because the mean of its divisors is an integer number (2895680).

Almost surely, 2^30022923 is an apocalyptic number.

30022923 is a deficient number, since it is larger than the sum of its proper divisors (16307957).

30022923 is a wasteful number, since it uses less digits than its factorization.

30022923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18186.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 30022923 is about 5479.3177495013. The cubic root of 30022923 is about 310.8023716586.

Adding to 30022923 its reverse (32922003), we get a palindrome (62944926).

The spelling of 30022923 in words is "thirty million, twenty-two thousand, nine hundred twenty-three".