30487040 has 40 divisors (see below), whose sum is σ = 73103580. Its totient is φ = 12193792.

The previous prime is 30487027. The next prime is 30487081. The reversal of 30487040 is 4078403.

It can be written as a sum of positive squares in 2 ways, for example, as 29767936 + 719104 = 5456^2 + 848^2 .

It is a tau number, because it is divible by the number of its divisors (40).

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, 3395 + ... + 8514.

Almost surely, 2^30487040 is an apocalyptic number.

It is an amenable number.

30487040 is an abundant number, since it is smaller than the sum of its proper divisors (42616540).

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

30487040 is an equidigital number, since it uses as much as digits as its factorization.

30487040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11932 (or 11916 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 30487040 is about 5521.5070406548. The cubic root of 30487040 is about 312.3957284117.

The spelling of 30487040 in words is "thirty million, four hundred eighty-seven thousand, forty".