30202940 has 12 divisors (see below), whose sum is σ = 63426216. Its totient is φ = 12081168.

The previous prime is 30202877. The next prime is 30202969. The reversal of 30202940 is 4920203.

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: 1510147 = 30202940 / (3 + 0 + 2 + 0 + 2 + 9 + 4 + 0).

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, 755054 + ... + 755093.

It is an arithmetic number, because the mean of its divisors is an integer number (5285518).

Almost surely, 2^30202940 is an apocalyptic number.

It is an amenable number.

30202940 is an abundant number, since it is smaller than the sum of its proper divisors (33223276).

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

30202940 is a wasteful number, since it uses less digits than its factorization.

30202940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1510156 (or 1510154 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 30202940 is about 5495.7201529918. The cubic root of 30202940 is about 311.4223230317.

The spelling of 30202940 in words is "thirty million, two hundred two thousand, nine hundred forty".