30890164 has 12 divisors (see below), whose sum is σ = 54554500. Its totient is φ = 15303168.

The previous prime is 30890161. The next prime is 30890177. The reversal of 30890164 is 46109803.

It can be written as a sum of positive squares in 2 ways, for example, as 23600164 + 7290000 = 4858^2 + 2700^2 .

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 3 ways as a sum of consecutive naturals, for example, 34989 + ... + 35860.

Almost surely, 2^30890164 is an apocalyptic number.

It is an amenable number.

30890164 is a deficient number, since it is larger than the sum of its proper divisors (23664336).

30890164 is a wasteful number, since it uses less digits than its factorization.

30890164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70962 (or 70960 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 30890164 is about 5557.8920464507. The cubic root of 30890164 is about 313.7666190146.

Adding to 30890164 its reverse (46109803), we get a palindrome (76999967).

The spelling of 30890164 in words is "thirty million, eight hundred ninety thousand, one hundred sixty-four".