30949860 has 96 divisors (see below), whose sum is σ = 96647040. Its totient is φ = 7354368.

The previous prime is 30949859. The next prime is 30949903. The reversal of 30949860 is 6894903.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18582 + ... + 20178.

It is an arithmetic number, because the mean of its divisors is an integer number (1006740).

Almost surely, 2^30949860 is an apocalyptic number.

30949860 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30949860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48323520).

30949860 is an abundant number, since it is smaller than the sum of its proper divisors (65697180).

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

30949860 is a wasteful number, since it uses less digits than its factorization.

30949860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1645 (or 1643 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 30949860 is about 5563.2598357438. The cubic root of 30949860 is about 313.9686095170.

The spelling of 30949860 in words is "thirty million, nine hundred forty-nine thousand, eight hundred sixty".