30072800 has 36 divisors (see below), whose sum is σ = 73417176. Its totient is φ = 12028800.

The previous prime is 30072793. The next prime is 30072811. The reversal of 30072800 is 827003.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17996 + ... + 19595.

It is an arithmetic number, because the mean of its divisors is an integer number (2039366).

Almost surely, 2^30072800 is an apocalyptic number.

It is an amenable number.

30072800 is an abundant number, since it is smaller than the sum of its proper divisors (43344376).

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

30072800 is a wasteful number, since it uses less digits than its factorization.

30072800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37611 (or 37598 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 30072800 is about 5483.8672485756. The cubic root of 30072800 is about 310.9743881474.

Adding to 30072800 its reverse (827003), we get a palindrome (30899803).

The spelling of 30072800 in words is "thirty million, seventy-two thousand, eight hundred".