20327940 has 72 divisors (see below), whose sum is σ = 63667968. Its totient is φ = 5244480.

The previous prime is 20327917. The next prime is 20327947. The reversal of 20327940 is 4972302.

It is not an unprimeable number, because it can be changed into a prime (20327947) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3759 + ... + 7401.

Almost surely, 2^20327940 is an apocalyptic number.

20327940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20327940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31833984).

20327940 is an abundant number, since it is smaller than the sum of its proper divisors (43340028).

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

20327940 is a wasteful number, since it uses less digits than its factorization.

20327940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3689 (or 3684 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 20327940 is about 4508.6516831532. The cubic root of 20327940 is about 272.9173359992.

The spelling of 20327940 in words is "twenty million, three hundred twenty-seven thousand, nine hundred forty".