30409072 has 20 divisors (see below), whose sum is σ = 59918040. Its totient is φ = 14946368.

The previous prime is 30409061. The next prime is 30409097. The reversal of 30409072 is 27090403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15163 + ... + 17050.

It is an arithmetic number, because the mean of its divisors is an integer number (2995902).

Almost surely, 2^30409072 is an apocalyptic number.

It is an amenable number.

30409072 is a deficient number, since it is larger than the sum of its proper divisors (29508968).

30409072 is a wasteful number, since it uses less digits than its factorization.

30409072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32280 (or 32274 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 30409072 is about 5514.4421295359. The cubic root of 30409072 is about 312.1291926067.

Adding to 30409072 its reverse (27090403), we get a palindrome (57499475).

The spelling of 30409072 in words is "thirty million, four hundred nine thousand, seventy-two".