30455540 has 24 divisors (see below), whose sum is σ = 64594152. Its totient is φ = 12060800.

The previous prime is 30455507. The next prime is 30455563. The reversal of 30455540 is 4555403.

It can be written as a sum of positive squares in 4 ways, for example, as 2808976 + 27646564 = 1676^2 + 5258^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5519 + ... + 9558.

It is an arithmetic number, because the mean of its divisors is an integer number (2691423).

Almost surely, 2^30455540 is an apocalyptic number.

It is an amenable number.

30455540 is an abundant number, since it is smaller than the sum of its proper divisors (34138612).

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

30455540 is a wasteful number, since it uses less digits than its factorization.

30455540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15187 (or 15185 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 26.

The square root of 30455540 is about 5518.6538213590. The cubic root of 30455540 is about 312.2880995467.

The spelling of 30455540 in words is "thirty million, four hundred fifty-five thousand, five hundred forty".