30406252 has 24 divisors (see below), whose sum is σ = 54526752. Its totient is φ = 14832000.

The previous prime is 30406249. The next prime is 30406261. The reversal of 30406252 is 25260403.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28977 + ... + 30007.

It is an arithmetic number, because the mean of its divisors is an integer number (2271948).

Almost surely, 2^30406252 is an apocalyptic number.

It is an amenable number.

30406252 is a deficient number, since it is larger than the sum of its proper divisors (24120500).

30406252 is a wasteful number, since it uses less digits than its factorization.

30406252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1209 (or 1207 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 30406252 is about 5514.1864313786. The cubic root of 30406252 is about 312.1195438246.

Adding to 30406252 its reverse (25260403), we get a palindrome (55666655).

The spelling of 30406252 in words is "thirty million, four hundred six thousand, two hundred fifty-two".