19944708 has 48 divisors (see below), whose sum is σ = 53437440. Its totient is φ = 5671584.

The previous prime is 19944677. The next prime is 19944709. The reversal of 19944708 is 80744991.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 19944708.

It is not an unprimeable number, because it can be changed into a prime (19944709) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23353 + ... + 24191.

It is an arithmetic number, because the mean of its divisors is an integer number (1113280).

Almost surely, 2^19944708 is an apocalyptic number.

It is an amenable number.

19944708 is an abundant number, since it is smaller than the sum of its proper divisors (33492732).

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

19944708 is a wasteful number, since it uses less digits than its factorization.

19944708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1136 (or 1134 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 19944708 is about 4465.9498429785. The cubic root of 19944708 is about 271.1913881586.

The spelling of 19944708 in words is "nineteen million, nine hundred forty-four thousand, seven hundred eight".