30861338 has 4 divisors (see below), whose sum is σ = 46292010. Its totient is φ = 15430668.

The previous prime is 30861329. The next prime is 30861349. The reversal of 30861338 is 83316803.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 29084449 + 1776889 = 5393^2 + 1333^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7715333 + ... + 7715336.

Almost surely, 2^30861338 is an apocalyptic number.

30861338 is a deficient number, since it is larger than the sum of its proper divisors (15430672).

30861338 is a wasteful number, since it uses less digits than its factorization.

30861338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15430671.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 30861338 is about 5555.2981918165. The cubic root of 30861338 is about 313.6689886768.

The spelling of 30861338 in words is "thirty million, eight hundred sixty-one thousand, three hundred thirty-eight".