30703840 has 24 divisors (see below), whose sum is σ = 72538200. Its totient is φ = 12281472.

The previous prime is 30703817. The next prime is 30703847. The reversal of 30703840 is 4830703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30703847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95790 + ... + 96109.

It is an arithmetic number, because the mean of its divisors is an integer number (3022425).

Almost surely, 2^30703840 is an apocalyptic number.

It is an amenable number.

30703840 is an abundant number, since it is smaller than the sum of its proper divisors (41834360).

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

30703840 is a wasteful number, since it uses less digits than its factorization.

30703840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191914 (or 191906 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 30703840 is about 5541.1045830231. The cubic root of 30703840 is about 313.1344847679.

The spelling of 30703840 in words is "thirty million, seven hundred three thousand, eight hundred forty".