19790946 has 64 divisors (see below), whose sum is σ = 51528960. Its totient is φ = 5512320.

The previous prime is 19790921. The next prime is 19790983. The reversal of 19790946 is 64909791.

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, 14860 + ... + 16136.

It is an arithmetic number, because the mean of its divisors is an integer number (805140).

Almost surely, 2^19790946 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19790946, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25764480).

19790946 is an abundant number, since it is smaller than the sum of its proper divisors (31738014).

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

19790946 is a wasteful number, since it uses less digits than its factorization.

19790946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1336 (or 1330 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The square root of 19790946 is about 4448.7016083347. The cubic root of 19790946 is about 270.4926806843.

It can be divided in two parts, 19790 and 946, that added together give a 4-th power (20736 = 12⁴).

The spelling of 19790946 in words is "nineteen million, seven hundred ninety thousand, nine hundred forty-six".