30740472 has 128 divisors (see below), whose sum is σ = 99187200. Its totient is φ = 8748000.

The previous prime is 30740467. The next prime is 30740473. The reversal of 30740472 is 27404703.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30740473) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 122347 + ... + 122597.

It is an arithmetic number, because the mean of its divisors is an integer number (774900).

Almost surely, 2^30740472 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 30740472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49593600).

30740472 is an abundant number, since it is smaller than the sum of its proper divisors (68446728).

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

30740472 is an equidigital number, since it uses as much as digits as its factorization.

30740472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285 (or 263 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 27.

The square root of 30740472 is about 5544.4090758168. The cubic root of 30740472 is about 313.2589663055.

The spelling of 30740472 in words is "thirty million, seven hundred forty thousand, four hundred seventy-two".