30401680 has 40 divisors (see below), whose sum is σ = 70979832. Its totient is φ = 12109824.

The previous prime is 30401659. The next prime is 30401681. The reversal of 30401680 is 8610403.

It can be written as a sum of positive squares in 4 ways, for example, as 20466576 + 9935104 = 4524^2 + 3152^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (30401681) 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, 22792 + ... + 24088.

Almost surely, 2^30401680 is an apocalyptic number.

It is an amenable number.

30401680 is an abundant number, since it is smaller than the sum of its proper divisors (40578152).

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

30401680 is a wasteful number, since it uses less digits than its factorization.

30401680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1603 (or 1597 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 30401680 is about 5513.7718487438. The cubic root of 30401680 is about 312.1038992121.

The spelling of 30401680 in words is "thirty million, four hundred one thousand, six hundred eighty".