19874946 has 64 divisors (see below), whose sum is σ = 49593600. Its totient is φ = 5170176.

The previous prime is 19874891. The next prime is 19874963. The reversal of 19874946 is 64947891.

It is a junction number, because it is equal to n+sod(n) for n = 19874895 and 19874904.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48390 + ... + 48798.

It is an arithmetic number, because the mean of its divisors is an integer number (774900).

Almost surely, 2^19874946 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19874946, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24796800).

19874946 is an abundant number, since it is smaller than the sum of its proper divisors (29718654).

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

19874946 is a wasteful number, since it uses less digits than its factorization.

19874946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523.

The product of its digits is 435456, while the sum is 48.

The square root of 19874946 is about 4458.1325686884. The cubic root of 19874946 is about 270.8748304278.

The spelling of 19874946 in words is "nineteen million, eight hundred seventy-four thousand, nine hundred forty-six".