30168890 has 32 divisors (see below), whose sum is σ = 56415744. Its totient is φ = 11603520.

The previous prime is 30168881. The next prime is 30168913. The reversal of 30168890 is 9886103.

It is a self number, because there is not a number n which added to its sum of digits gives 30168890.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95012 + ... + 95328.

It is an arithmetic number, because the mean of its divisors is an integer number (1762992).

Almost surely, 2^30168890 is an apocalyptic number.

30168890 is a deficient number, since it is larger than the sum of its proper divisors (26246854).

30168890 is a wasteful number, since it uses less digits than its factorization.

30168890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 30168890 is about 5492.6214142247. The cubic root of 30168890 is about 311.3052492472.

The spelling of 30168890 in words is "thirty million, one hundred sixty-eight thousand, eight hundred ninety".