30890166 has 12 divisors (see below), whose sum is σ = 61807572. Its totient is φ = 10292184.

The previous prime is 30890161. The next prime is 30890177. The reversal of 30890166 is 66109803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30890161) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12480 + ... + 14748.

It is an arithmetic number, because the mean of its divisors is an integer number (5150631).

Almost surely, 2^30890166 is an apocalyptic number.

30890166 is an abundant number, since it is smaller than the sum of its proper divisors (30917406).

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

30890166 is an frugal number, since it uses more digits than its factorization.

30890166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4543 (or 2274 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 30890166 is about 5557.8922263750. The cubic root of 30890166 is about 313.7666257863.

Multiplying 30890166 by its product of nonzero digits (7776), we get a square (240201930816 = 490104²).

Adding to 30890166 its reverse (66109803), we get a palindrome (96999969).

The spelling of 30890166 in words is "thirty million, eight hundred ninety thousand, one hundred sixty-six".