30914220 has 24 divisors (see below), whose sum is σ = 86559984. Its totient is φ = 8243776.

The previous prime is 30914189. The next prime is 30914227. The reversal of 30914220 is 2241903.

It is not an unprimeable number, because it can be changed into a prime (30914227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 257559 + ... + 257678.

It is an arithmetic number, because the mean of its divisors is an integer number (3606666).

Almost surely, 2^30914220 is an apocalyptic number.

30914220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30914220 is an abundant number, since it is smaller than the sum of its proper divisors (55645764).

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

30914220 is a wasteful number, since it uses less digits than its factorization.

30914220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515249 (or 515247 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 30914220 is about 5560.0557551161. The cubic root of 30914220 is about 313.8480474296.

The spelling of 30914220 in words is "thirty million, nine hundred fourteen thousand, two hundred twenty".