30712200 has 96 divisors (see below), whose sum is σ = 100841760. Its totient is φ = 7705600.

The previous prime is 30712193. The next prime is 30712211. The reversal of 30712200 is 221703.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 30712200.

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, 8695 + ... + 11705.

It is an arithmetic number, because the mean of its divisors is an integer number (1050435).

Almost surely, 2^30712200 is an apocalyptic number.

30712200 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 30712200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50420880).

30712200 is an abundant number, since it is smaller than the sum of its proper divisors (70129560).

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

30712200 is a wasteful number, since it uses less digits than its factorization.

30712200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3047 (or 3038 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 15.

The square root of 30712200 is about 5541.8588939092. The cubic root of 30712200 is about 313.1629021334.

Adding to 30712200 its reverse (221703), we get a palindrome (30933903).

The spelling of 30712200 in words is "thirty million, seven hundred twelve thousand, two hundred".