20494968 has 96 divisors (see below), whose sum is σ = 57623040. Its totient is φ = 6065280.

The previous prime is 20494907. The next prime is 20494987. The reversal of 20494968 is 86949402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 125655 + ... + 125817.

It is an arithmetic number, because the mean of its divisors is an integer number (600240).

Almost surely, 2^20494968 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20494968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28811520).

20494968 is an abundant number, since it is smaller than the sum of its proper divisors (37128072).

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

20494968 is a wasteful number, since it uses less digits than its factorization.

20494968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229 (or 212 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 20494968 is about 4527.1368435248. The cubic root of 20494968 is about 273.6627886742.

The spelling of 20494968 in words is "twenty million, four hundred ninety-four thousand, nine hundred sixty-eight".