30423506 has 16 divisors (see below), whose sum is σ = 49115160. Its totient is φ = 14081280.

The previous prime is 30423499. The next prime is 30423511. The reversal of 30423506 is 60532403.

30423506 = 676² + 677² + ... + 736².

It can be written as a sum of positive squares in 4 ways, for example, as 24098281 + 6325225 = 4909^2 + 2515^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5261 + ... + 9408.

Almost surely, 2^30423506 is an apocalyptic number.

30423506 is a deficient number, since it is larger than the sum of its proper divisors (18691654).

30423506 is a wasteful number, since it uses less digits than its factorization.

30423506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14749.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 30423506 is about 5515.7507195304. The cubic root of 30423506 is about 312.1785699781.

Adding to 30423506 its reverse (60532403), we get a palindrome (90955909).

The spelling of 30423506 in words is "thirty million, four hundred twenty-three thousand, five hundred six".