19936940 has 12 divisors (see below), whose sum is σ = 41867616. Its totient is φ = 7974768.

The previous prime is 19936933. The next prime is 19936951. The reversal of 19936940 is 4963991.

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 3 ways as a sum of consecutive naturals, for example, 498404 + ... + 498443.

It is an arithmetic number, because the mean of its divisors is an integer number (3488968).

Almost surely, 2^19936940 is an apocalyptic number.

19936940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19936940 is an abundant number, since it is smaller than the sum of its proper divisors (21930676).

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

19936940 is a wasteful number, since it uses less digits than its factorization.

19936940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 996856 (or 996854 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 41.

The square root of 19936940 is about 4465.0800664714. The cubic root of 19936940 is about 271.1561760068.

The spelling of 19936940 in words is "nineteen million, nine hundred thirty-six thousand, nine hundred forty".