30440724 has 12 divisors (see below), whose sum is σ = 71028384. Its totient is φ = 10146904.

The previous prime is 30440719. The next prime is 30440743. The reversal of 30440724 is 42704403.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 30440694 and 30440703.

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, 1268352 + ... + 1268375.

It is an arithmetic number, because the mean of its divisors is an integer number (5919032).

Almost surely, 2^30440724 is an apocalyptic number.

It is an amenable number.

30440724 is an abundant number, since it is smaller than the sum of its proper divisors (40587660).

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

30440724 is a wasteful number, since it uses less digits than its factorization.

30440724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2536734 (or 2536732 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 24.

The square root of 30440724 is about 5517.3113017121. The cubic root of 30440724 is about 312.2374507323.

The spelling of 30440724 in words is "thirty million, four hundred forty thousand, seven hundred twenty-four".