30749868 has 30 divisors (see below), whose sum is σ = 80387076. Its totient is φ = 10249848.

The previous prime is 30749867. The next prime is 30749869. The reversal of 30749868 is 86894703.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (30749867) and next prime (30749869).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (30749867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 47130 + ... + 47777.

Almost surely, 2^30749868 is an apocalyptic number.

It is an amenable number.

30749868 is an abundant number, since it is smaller than the sum of its proper divisors (49637208).

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

30749868 is a wasteful number, since it uses less digits than its factorization.

30749868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94923 (or 94912 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 30749868 is about 5545.2563511528. The cubic root of 30749868 is about 313.2908795155.

The spelling of 30749868 in words is "thirty million, seven hundred forty-nine thousand, eight hundred sixty-eight".