30902085 has 24 divisors (see below), whose sum is σ = 53745120. Its totient is φ = 16425312.

The previous prime is 30902059. The next prime is 30902089. The reversal of 30902085 is 58020903.

It is not a de Polignac number, because 30902085 - 2¹⁰ = 30901061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30902089) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14626 + ... + 16604.

It is an arithmetic number, because the mean of its divisors is an integer number (2239380).

Almost surely, 2^30902085 is an apocalyptic number.

It is an amenable number.

30902085 is a deficient number, since it is larger than the sum of its proper divisors (22843035).

30902085 is a wasteful number, since it uses less digits than its factorization.

30902085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2337 (or 2334 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 30902085 is about 5558.9643819690. The cubic root of 30902085 is about 313.8069763142.

Adding to 30902085 its reverse (58020903), we get a palindrome (88922988).

The spelling of 30902085 in words is "thirty million, nine hundred two thousand, eighty-five".