30988894 has 8 divisors (see below), whose sum is σ = 46895040. Its totient is φ = 15357216.

The previous prime is 30988883. The next prime is 30988897. The reversal of 30988894 is 49888903.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30988897) 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, 68334 + ... + 68785.

It is an arithmetic number, because the mean of its divisors is an integer number (5861880).

Almost surely, 2^30988894 is an apocalyptic number.

30988894 is a deficient number, since it is larger than the sum of its proper divisors (15906146).

30988894 is a wasteful number, since it uses less digits than its factorization.

30988894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137234.

The product of its (nonzero) digits is 497664, while the sum is 49.

The square root of 30988894 is about 5566.7669252448. The cubic root of 30988894 is about 314.1005465932.

The spelling of 30988894 in words is "thirty million, nine hundred eighty-eight thousand, eight hundred ninety-four".