30868936 has 16 divisors (see below), whose sum is σ = 66147840. Its totient is φ = 13229520.

The previous prime is 30868931. The next prime is 30868961. The reversal of 30868936 is 63986803.

It is a junction number, because it is equal to n+sod(n) for n = 30868892 and 30868901.

It is not an unprimeable number, because it can be changed into a prime (30868931) 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, 275560 + ... + 275671.

It is an arithmetic number, because the mean of its divisors is an integer number (4134240).

Almost surely, 2^30868936 is an apocalyptic number.

It is an amenable number.

30868936 is an abundant number, since it is smaller than the sum of its proper divisors (35278904).

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

30868936 is a wasteful number, since it uses less digits than its factorization.

30868936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551244 (or 551240 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 30868936 is about 5555.9820014107. The cubic root of 30868936 is about 313.6947281249.

The spelling of 30868936 in words is "thirty million, eight hundred sixty-eight thousand, nine hundred thirty-six".