30455140 has 24 divisors (see below), whose sum is σ = 64125432. Its totient is φ = 12149760.

The previous prime is 30455123. The next prime is 30455147. The reversal of 30455140 is 4155403.

It can be written as a sum of positive squares in 4 ways, for example, as 4485924 + 25969216 = 2118^2 + 5096^2 .

It is not an unprimeable number, because it can be changed into a prime (30455147) 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, 6612 + ... + 10228.

It is an arithmetic number, because the mean of its divisors is an integer number (2671893).

Almost surely, 2^30455140 is an apocalyptic number.

It is an amenable number.

30455140 is an abundant number, since it is smaller than the sum of its proper divisors (33670292).

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

30455140 is a wasteful number, since it uses less digits than its factorization.

30455140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4047 (or 4045 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 30455140 is about 5518.6175805178. The cubic root of 30455140 is about 312.2867323539.

The spelling of 30455140 in words is "thirty million, four hundred fifty-five thousand, one hundred forty".