30890012 has 24 divisors (see below), whose sum is σ = 58232832. Its totient is φ = 14295600.

The previous prime is 30890011. The next prime is 30890021. The reversal of 30890012 is 21009803.

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 30890012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30890011) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2564 + ... + 8267.

It is an arithmetic number, because the mean of its divisors is an integer number (2426368).

Almost surely, 2^30890012 is an apocalyptic number.

It is an amenable number.

30890012 is a deficient number, since it is larger than the sum of its proper divisors (27342820).

30890012 is a wasteful number, since it uses less digits than its factorization.

30890012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10889 (or 10887 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 30890012 is about 5557.8783721848. The cubic root of 30890012 is about 313.7661043675.

Adding to 30890012 its reverse (21009803), we get a palindrome (51899815).

The spelling of 30890012 in words is "thirty million, eight hundred ninety thousand, twelve".