30109690 has 16 divisors (see below), whose sum is σ = 58366728. Its totient is φ = 11117376.

The previous prime is 30109687. The next prime is 30109721. The reversal of 30109690 is 9690103.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 16248961 + 13860729 = 4031^2 + 3723^2 .

It is a super-2 number, since 2×30109690² = 1813186863792200, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115677 + ... + 115936.

Almost surely, 2^30109690 is an apocalyptic number.

30109690 is a deficient number, since it is larger than the sum of its proper divisors (28257038).

30109690 is a wasteful number, since it uses less digits than its factorization.

30109690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231633.

The product of its (nonzero) digits is 1458, while the sum is 28.

The square root of 30109690 is about 5487.2297199953. The cubic root of 30109690 is about 311.1014925692.

Adding to 30109690 its reverse (9690103), we get a palindrome (39799793).

The spelling of 30109690 in words is "thirty million, one hundred nine thousand, six hundred ninety".