30801984 has 56 divisors (see below), whose sum is σ = 82161888. Its totient is φ = 10183680.

The previous prime is 30801961. The next prime is 30801989. The reversal of 30801984 is 48910803.

It is not an unprimeable number, because it can be changed into a prime (30801989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25719 + ... + 26889.

Almost surely, 2^30801984 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30801984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41080944).

30801984 is an abundant number, since it is smaller than the sum of its proper divisors (51359904).

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

30801984 is a wasteful number, since it uses less digits than its factorization.

30801984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1323 (or 1313 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 30801984 is about 5549.9535133188. The cubic root of 30801984 is about 313.4677718957.

The spelling of 30801984 in words is "thirty million, eight hundred one thousand, nine hundred eighty-four".