30389400 has 72 divisors (see below), whose sum is σ = 102063780. Its totient is φ = 8103360.

The previous prime is 30389399. The next prime is 30389423. The reversal of 30389400 is 498303.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 6642 + ... + 10241.

Almost surely, 2^30389400 is an apocalyptic number.

30389400 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30389400 is an abundant number, since it is smaller than the sum of its proper divisors (71674380).

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

30389400 is a wasteful number, since it uses less digits than its factorization.

30389400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16905 (or 16893 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 30389400 is about 5512.6581609964. The cubic root of 30389400 is about 312.0618713589.

The spelling of 30389400 in words is "thirty million, three hundred eighty-nine thousand, four hundred".