30505400 has 48 divisors (see below), whose sum is σ = 71543040. Its totient is φ = 12096000.

The previous prime is 30505399. The next prime is 30505421. The reversal of 30505400 is 450503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24800 + ... + 26000.

It is an arithmetic number, because the mean of its divisors is an integer number (1490480).

Almost surely, 2^30505400 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30505400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35771520).

30505400 is an abundant number, since it is smaller than the sum of its proper divisors (41037640).

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

30505400 is a wasteful number, since it uses less digits than its factorization.

30505400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1344 (or 1335 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 17.

The square root of 30505400 is about 5523.1693799846. The cubic root of 30505400 is about 312.4584264695.

Adding to 30505400 its reverse (450503), we get a palindrome (30955903).

The spelling of 30505400 in words is "thirty million, five hundred five thousand, four hundred".