30401408 has 32 divisors (see below), whose sum is σ = 61149000. Its totient is φ = 15054336.

The previous prime is 30401369. The next prime is 30401417. The reversal of 30401408 is 80410403.

It is a tau number, because it is divible by the number of its divisors (32).

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 30401408.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 12863 + ... + 15041.

Almost surely, 2^30401408 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 30401408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30574500).

30401408 is an abundant number, since it is smaller than the sum of its proper divisors (30747592).

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

30401408 is a wasteful number, since it uses less digits than its factorization.

30401408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2302 (or 2290 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 30401408 is about 5513.7471831777. The cubic root of 30401408 is about 312.1029684246.

The spelling of 30401408 in words is "thirty million, four hundred one thousand, four hundred eight".