30944400 has 120 divisors (see below), whose sum is σ = 100466784. Its totient is φ = 8140800.

The previous prime is 30944399. The next prime is 30944411. The reversal of 30944400 is 444903.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 128280 + ... + 128520.

Almost surely, 2^30944400 is an apocalyptic number.

30944400 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30944400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50233392).

30944400 is an abundant number, since it is smaller than the sum of its proper divisors (69522384).

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

30944400 is a wasteful number, since it uses less digits than its factorization.

30944400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369 (or 358 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 30944400 is about 5562.7690946147. The cubic root of 30944400 is about 313.9501455732.

The spelling of 30944400 in words is "thirty million, nine hundred forty-four thousand, four hundred".