19796874 has 16 divisors (see below), whose sum is σ = 41923008. Its totient is φ = 6210752.

The previous prime is 19796873. The next prime is 19796923. The reversal of 19796874 is 47869791.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (19796873) 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 7 ways as a sum of consecutive naturals, for example, 96942 + ... + 97145.

It is an arithmetic number, because the mean of its divisors is an integer number (2620188).

Almost surely, 2^19796874 is an apocalyptic number.

19796874 is an abundant number, since it is smaller than the sum of its proper divisors (22126134).

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

19796874 is a wasteful number, since it uses less digits than its factorization.

19796874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194109.

The product of its digits is 762048, while the sum is 51.

The square root of 19796874 is about 4449.3678202639. The cubic root of 19796874 is about 270.5196849609.

The spelling of 19796874 in words is "nineteen million, seven hundred ninety-six thousand, eight hundred seventy-four".