30085788 has 12 divisors (see below), whose sum is σ = 70200200. Its totient is φ = 10028592.

The previous prime is 30085787. The next prime is 30085813. The reversal of 30085788 is 88758003.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30085787) 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, 1253563 + ... + 1253586.

Almost surely, 2^30085788 is an apocalyptic number.

It is an amenable number.

30085788 is an abundant number, since it is smaller than the sum of its proper divisors (40114412).

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

30085788 is a wasteful number, since it uses less digits than its factorization.

30085788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2507156 (or 2507154 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 39.

The square root of 30085788 is about 5485.0513215466. The cubic root of 30085788 is about 311.0191501254.

The spelling of 30085788 in words is "thirty million, eighty-five thousand, seven hundred eighty-eight".