30539540 has 12 divisors (see below), whose sum is σ = 64133076. Its totient is φ = 12215808.

The previous prime is 30539489. The next prime is 30539573. The reversal of 30539540 is 4593503.

It can be written as a sum of positive squares in 2 ways, for example, as 10163344 + 20376196 = 3188^2 + 4514^2 .

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, 763469 + ... + 763508.

It is an arithmetic number, because the mean of its divisors is an integer number (5344423).

Almost surely, 2^30539540 is an apocalyptic number.

It is an amenable number.

30539540 is an abundant number, since it is smaller than the sum of its proper divisors (33593536).

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

30539540 is a wasteful number, since it uses less digits than its factorization.

30539540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1526986 (or 1526984 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 29.

The square root of 30539540 is about 5526.2591325417. The cubic root of 30539540 is about 312.5749452248.

The spelling of 30539540 in words is "thirty million, five hundred thirty-nine thousand, five hundred forty".