19704972 has 48 divisors (see below), whose sum is σ = 55641600. Its totient is φ = 5298432.

The previous prime is 19704959. The next prime is 19704973. The reversal of 19704972 is 27940791.

It is a self number, because there is not a number n which added to its sum of digits gives 19704972.

It is not an unprimeable number, because it can be changed into a prime (19704973) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 5472 + ... + 8327.

It is an arithmetic number, because the mean of its divisors is an integer number (1159200).

Almost surely, 2^19704972 is an apocalyptic number.

19704972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19704972 is an abundant number, since it is smaller than the sum of its proper divisors (35936628).

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

19704972 is a wasteful number, since it uses less digits than its factorization.

19704972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13830 (or 13828 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 39.

The square root of 19704972 is about 4439.0282720433. The cubic root of 19704972 is about 270.1004290322.

The spelling of 19704972 in words is "nineteen million, seven hundred four thousand, nine hundred seventy-two".