30969538 has 4 divisors (see below), whose sum is σ = 46454310. Its totient is φ = 15484768.

The previous prime is 30969509. The next prime is 30969551. The reversal of 30969538 is 83596903.

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., 27952369 + 3017169 = 5287^2 + 1737^2 .

It is a super-2 number, since 2×30969538² = 1918224567866888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30969494 and 30969503.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7742383 + ... + 7742386.

Almost surely, 2^30969538 is an apocalyptic number.

30969538 is a deficient number, since it is larger than the sum of its proper divisors (15484772).

30969538 is a wasteful number, since it uses less digits than its factorization.

30969538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15484771.

The product of its (nonzero) digits is 174960, while the sum is 43.

The square root of 30969538 is about 5565.0281221212. The cubic root of 30969538 is about 314.0351361009.

The spelling of 30969538 in words is "thirty million, nine hundred sixty-nine thousand, five hundred thirty-eight".