30689984 has 28 divisors (see below), whose sum is σ = 65586864. Its totient is φ = 14164224.

The previous prime is 30689957. The next prime is 30689987. The reversal of 30689984 is 48998603.

It is not an unprimeable number, because it can be changed into a prime (30689987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17612 + ... + 19275.

It is an arithmetic number, because the mean of its divisors is an integer number (2342388).

Almost surely, 2^30689984 is an apocalyptic number.

It is an amenable number.

30689984 is an abundant number, since it is smaller than the sum of its proper divisors (34896880).

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

30689984 is a wasteful number, since it uses less digits than its factorization.

30689984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36912 (or 36902 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 47.

The square root of 30689984 is about 5539.8541497047. The cubic root of 30689984 is about 313.0873740020.

The spelling of 30689984 in words is "thirty million, six hundred eighty-nine thousand, nine hundred eighty-four".