30400632 has 24 divisors (see below), whose sum is σ = 82335240. Its totient is φ = 10133520.

The previous prime is 30400621. The next prime is 30400637. The reversal of 30400632 is 23600403.

30400632 is a `hidden beast` number, since 30 + 4 + 0 + 0 + 632 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30400637) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 211044 + ... + 211187.

It is an arithmetic number, because the mean of its divisors is an integer number (3430635).

Almost surely, 2^30400632 is an apocalyptic number.

It is an amenable number.

30400632 is an abundant number, since it is smaller than the sum of its proper divisors (51934608).

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

30400632 is a wasteful number, since it uses less digits than its factorization.

30400632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422243 (or 422236 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 30400632 is about 5513.6768131620. The cubic root of 30400632 is about 312.1003129120.

The spelling of 30400632 in words is "thirty million, four hundred thousand, six hundred thirty-two".