30290923 has 16 divisors (see below), whose sum is σ = 35392896. Its totient is φ = 25666560.

The previous prime is 30290903. The next prime is 30290969. The reversal of 30290923 is 32909203.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 30290923 - 2⁹ = 30290411 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30290891 and 30290900.

It is not an unprimeable number, because it can be changed into a prime (30290903) 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 + ... + 10732.

It is an arithmetic number, because the mean of its divisors is an integer number (2212056).

Almost surely, 2^30290923 is an apocalyptic number.

30290923 is a deficient number, since it is larger than the sum of its proper divisors (5101973).

30290923 is a wasteful number, since it uses less digits than its factorization.

30290923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3414.

The product of its (nonzero) digits is 2916, while the sum is 28.

The square root of 30290923 is about 5503.7190153568. The cubic root of 30290923 is about 311.7244272572.

It can be divided in two parts, 30290 and 923, that added together give a palindrome (31213).

The spelling of 30290923 in words is "thirty million, two hundred ninety thousand, nine hundred twenty-three".