30039140 has 12 divisors (see below), whose sum is σ = 63082236. Its totient is φ = 12015648.

The previous prime is 30039131. The next prime is 30039199. The reversal of 30039140 is 4193003.

It can be written as a sum of positive squares in 2 ways, for example, as 3268864 + 26770276 = 1808^2 + 5174^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 1501957 = 30039140 / (3 + 0 + 0 + 3 + 9 + 1 + 4 + 0).

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, 750959 + ... + 750998.

It is an arithmetic number, because the mean of its divisors is an integer number (5256853).

Almost surely, 2^30039140 is an apocalyptic number.

It is an amenable number.

30039140 is an abundant number, since it is smaller than the sum of its proper divisors (33043096).

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

30039140 is a wasteful number, since it uses less digits than its factorization.

30039140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1501966 (or 1501964 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 30039140 is about 5480.7973872421. The cubic root of 30039140 is about 310.8583219606.

The spelling of 30039140 in words is "thirty million, thirty-nine thousand, one hundred forty".