30490540 has 24 divisors (see below), whose sum is σ = 64188432. Its totient is φ = 12166080.

The previous prime is 30490519. The next prime is 30490547. The reversal of 30490540 is 4509403.

It is not an unprimeable number, because it can be changed into a prime (30490547) 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, 7567 + ... + 10873.

It is an arithmetic number, because the mean of its divisors is an integer number (2674518).

Almost surely, 2^30490540 is an apocalyptic number.

It is an amenable number.

30490540 is an abundant number, since it is smaller than the sum of its proper divisors (33697892).

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

30490540 is a wasteful number, since it uses less digits than its factorization.

30490540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3777 (or 3775 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 30490540 is about 5521.8239740144. The cubic root of 30490540 is about 312.4076825973.

Adding to 30490540 its reverse (4509403), we get a palindrome (34999943).

The spelling of 30490540 in words is "thirty million, four hundred ninety thousand, five hundred forty".