30504400 has 30 divisors (see below), whose sum is σ = 73287782. Its totient is φ = 12201600.

The previous prime is 30504379. The next prime is 30504401. The reversal of 30504400 is 440503.

It can be written as a sum of positive squares in 3 ways, for example, as 1860496 + 28643904 = 1364^2 + 5352^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30504401) 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 5 ways as a sum of consecutive naturals, for example, 37731 + ... + 38530.

Almost surely, 2^30504400 is an apocalyptic number.

It is an amenable number.

30504400 is an abundant number, since it is smaller than the sum of its proper divisors (42783382).

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

30504400 is a wasteful number, since it uses less digits than its factorization.

30504400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76279 (or 76268 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 30504400 is about 5523.0788515103. The cubic root of 30504400 is about 312.4550121905.

Adding to 30504400 its reverse (440503), we get a palindrome (30944903).

The spelling of 30504400 in words is "thirty million, five hundred four thousand, four hundred".