30013040 has 20 divisors (see below), whose sum is σ = 69780504. Its totient is φ = 12005184.

The previous prime is 30013033. The next prime is 30013051. The reversal of 30013040 is 4031003.

It is a tau number, because it is divible by the number of its divisors (20).

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, 187502 + ... + 187661.

Almost surely, 2^30013040 is an apocalyptic number.

It is an amenable number.

30013040 is an abundant number, since it is smaller than the sum of its proper divisors (39767464).

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

30013040 is a wasteful number, since it uses less digits than its factorization.

30013040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375176 (or 375170 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 30013040 is about 5478.4158294164. The cubic root of 30013040 is about 310.7682644205.

Adding to 30013040 its reverse (4031003), we get a palindrome (34044043).

The spelling of 30013040 in words is "thirty million, thirteen thousand, forty".