30288869 has 16 divisors (see below), whose sum is σ = 34608000. Its totient is φ = 26277696.

The previous prime is 30288851. The next prime is 30288871. The reversal of 30288869 is 96888203.

It is a cyclic number.

It is not a de Polignac number, because 30288869 - 2²⁰ = 29240293 is a prime.

It is a super-2 number, since 2×30288869² = 1834831170598322, 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 (30288809) 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, 36392 + ... + 37214.

It is an arithmetic number, because the mean of its divisors is an integer number (2163000).

Almost surely, 2^30288869 is an apocalyptic number.

It is an amenable number.

30288869 is a deficient number, since it is larger than the sum of its proper divisors (4319131).

30288869 is a wasteful number, since it uses less digits than its factorization.

30288869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1004.

The product of its (nonzero) digits is 165888, while the sum is 44.

The square root of 30288869 is about 5503.5324110974. The cubic root of 30288869 is about 311.7173811811.

The spelling of 30288869 in words is "thirty million, two hundred eighty-eight thousand, eight hundred sixty-nine".