19820934 has 48 divisors (see below), whose sum is σ = 50139648. Its totient is φ = 5540976.

The previous prime is 19820921. The next prime is 19820951. The reversal of 19820934 is 43902891.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4249 + ... + 7595.

It is an arithmetic number, because the mean of its divisors is an integer number (1044576).

Almost surely, 2^19820934 is an apocalyptic number.

19820934 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 19820934, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25069824).

19820934 is an abundant number, since it is smaller than the sum of its proper divisors (30318714).

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

19820934 is a wasteful number, since it uses less digits than its factorization.

19820934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3409 (or 3406 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 19820934 is about 4452.0707541547. The cubic root of 19820934 is about 270.6292320310.

The spelling of 19820934 in words is "nineteen million, eight hundred twenty thousand, nine hundred thirty-four".