30373140 has 72 divisors (see below), whose sum is σ = 98939232. Its totient is φ = 6941760.

The previous prime is 30373117. The next prime is 30373151. The reversal of 30373140 is 4137303.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2226 + ... + 8105.

It is an arithmetic number, because the mean of its divisors is an integer number (1374156).

Almost surely, 2^30373140 is an apocalyptic number.

30373140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30373140 is an abundant number, since it is smaller than the sum of its proper divisors (68566092).

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

30373140 is a wasteful number, since it uses less digits than its factorization.

30373140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10357 (or 10348 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 21.

The square root of 30373140 is about 5511.1831760521. The cubic root of 30373140 is about 312.0062046761.

The spelling of 30373140 in words is "thirty million, three hundred seventy-three thousand, one hundred forty".