30890966 has 4 divisors (see below), whose sum is σ = 46336452. Its totient is φ = 15445482.

The previous prime is 30890963. The next prime is 30891011. The reversal of 30890966 is 66909803.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30890963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7722740 + ... + 7722743.

It is an arithmetic number, because the mean of its divisors is an integer number (11584113).

Almost surely, 2^30890966 is an apocalyptic number.

30890966 is a deficient number, since it is larger than the sum of its proper divisors (15445486).

30890966 is a wasteful number, since it uses less digits than its factorization.

30890966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15445485.

The product of its (nonzero) digits is 69984, while the sum is 41.

The square root of 30890966 is about 5557.9641956385. The cubic root of 30890966 is about 313.7693344275.

The spelling of 30890966 in words is "thirty million, eight hundred ninety thousand, nine hundred sixty-six".