30929689 has 8 divisors (see below), whose sum is σ = 36567360. Its totient is φ = 25596816.

The previous prime is 30929683. The next prime is 30929737. The reversal of 30929689 is 98692903.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30929689 - 2²¹ = 28832537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30929683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75979 + ... + 76384.

It is an arithmetic number, because the mean of its divisors is an integer number (4570920).

Almost surely, 2^30929689 is an apocalyptic number.

It is an amenable number.

30929689 is a deficient number, since it is larger than the sum of its proper divisors (5637671).

30929689 is a wasteful number, since it uses less digits than its factorization.

30929689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152399.

The product of its (nonzero) digits is 209952, while the sum is 46.

The square root of 30929689 is about 5561.4466643132. The cubic root of 30929689 is about 313.9003869452.

The spelling of 30929689 in words is "thirty million, nine hundred twenty-nine thousand, six hundred eighty-nine".