30638412 has 168 divisors, whose sum is σ = 97932800. Its totient is φ = 8188128.

The previous prime is 30638401. The next prime is 30638441. The reversal of 30638412 is 21483603.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 387789 + ... + 387867.

Almost surely, 2^30638412 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30638412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48966400).

30638412 is an abundant number, since it is smaller than the sum of its proper divisors (67294388).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30638412 is a wasteful number, since it uses less digits than its factorization.

30638412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127 (or 110 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 30638412 is about 5535.1975574500. The cubic root of 30638412 is about 312.9119031294.

The spelling of 30638412 in words is "thirty million, six hundred thirty-eight thousand, four hundred twelve".