19802412 has 72 divisors (see below), whose sum is σ = 57657600. Its totient is φ = 5613408.

The previous prime is 19802311. The next prime is 19802423. The reversal of 19802412 is 21420891.

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 23 ways as a sum of consecutive naturals, for example, 44889 + ... + 45327.

It is an arithmetic number, because the mean of its divisors is an integer number (800800).

Almost surely, 2^19802412 is an apocalyptic number.

19802412 is a gapful number since it is divisible by the number (12) 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 19802412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28828800).

19802412 is an abundant number, since it is smaller than the sum of its proper divisors (37855188).

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

19802412 is a wasteful number, since it uses less digits than its factorization.

19802412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635 (or 630 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 19802412 is about 4449.9901123486. The cubic root of 19802412 is about 270.5449077704.

The spelling of 19802412 in words is "nineteen million, eight hundred two thousand, four hundred twelve".