30866740 has 12 divisors (see below), whose sum is σ = 64820196. Its totient is φ = 12346688.

The previous prime is 30866707. The next prime is 30866749. The reversal of 30866740 is 4766803.

It can be written as a sum of positive squares in 2 ways, for example, as 12702096 + 18164644 = 3564^2 + 4262^2 .

It is a junction number, because it is equal to n+sod(n) for n = 30866696 and 30866705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30866749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 771649 + ... + 771688.

It is an arithmetic number, because the mean of its divisors is an integer number (5401683).

Almost surely, 2^30866740 is an apocalyptic number.

It is an amenable number.

30866740 is an abundant number, since it is smaller than the sum of its proper divisors (33953456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30866740 is a wasteful number, since it uses less digits than its factorization.

30866740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1543346 (or 1543344 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 30866740 is about 5555.7843730656. The cubic root of 30866740 is about 313.6872892554.

The spelling of 30866740 in words is "thirty million, eight hundred sixty-six thousand, seven hundred forty".