30489688 has 16 divisors (see below), whose sum is σ = 57273480. Its totient is φ = 15216768.

The previous prime is 30489673. The next prime is 30489703. The reversal of 30489688 is 88698403.

It is an interprime number because it is at equal distance from previous prime (30489673) and next prime (30489703).

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, 1531 + ... + 7957.

Almost surely, 2^30489688 is an apocalyptic number.

It is an amenable number.

30489688 is a deficient number, since it is larger than the sum of its proper divisors (26783792).

30489688 is a wasteful number, since it uses less digits than its factorization.

30489688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7026 (or 7022 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 46.

The square root of 30489688 is about 5521.7468250545. The cubic root of 30489688 is about 312.4047726912.

The spelling of 30489688 in words is "thirty million, four hundred eighty-nine thousand, six hundred eighty-eight".