30668869 has 16 divisors (see below), whose sum is σ = 40250880. Its totient is φ = 22638960.

The previous prime is 30668839. The next prime is 30668873. The reversal of 30668869 is 96886603.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 30668869 - 2⁵ = 30668837 is a prime.

It is a super-2 number, since 2×30668869² = 1881159051478322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30668809) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9019 + ... + 11944.

It is an arithmetic number, because the mean of its divisors is an integer number (2515680).

Almost surely, 2^30668869 is an apocalyptic number.

It is an amenable number.

30668869 is a deficient number, since it is larger than the sum of its proper divisors (9582011).

30668869 is a wasteful number, since it uses less digits than its factorization.

30668869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21000.

The product of its (nonzero) digits is 373248, while the sum is 46.

The square root of 30668869 is about 5537.9480857083. The cubic root of 30668869 is about 313.0155551681.

It can be divided in two parts, 3066 and 8869, that added together give a triangular number (11935 = T₁₅₄).

The spelling of 30668869 in words is "thirty million, six hundred sixty-eight thousand, eight hundred sixty-nine".