30650985 has 48 divisors (see below), whose sum is σ = 56019600. Its totient is φ = 15482880.

The previous prime is 30650981. The next prime is 30650993. The reversal of 30650985 is 58905603.

It can be written as a sum of positive squares in 8 ways, for example, as 147456 + 30503529 = 384^2 + 5523^2 .

It is not a de Polignac number, because 30650985 - 2² = 30650981 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30650981) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 68041 + ... + 68489.

It is an arithmetic number, because the mean of its divisors is an integer number (1167075).

Almost surely, 2^30650985 is an apocalyptic number.

It is an amenable number.

30650985 is a deficient number, since it is larger than the sum of its proper divisors (25368615).

30650985 is a wasteful number, since it uses less digits than its factorization.

30650985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538 (or 535 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 30650985 is about 5536.3331727778. Note that the first 3 decimals coincide. The cubic root of 30650985 is about 312.9547002052.

The spelling of 30650985 in words is "thirty million, six hundred fifty thousand, nine hundred eighty-five".