20746968 has 64 divisors (see below), whose sum is σ = 57283200. Its totient is φ = 6209280.

The previous prime is 20746963. The next prime is 20747011. The reversal of 20746968 is 86964702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20746961) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23055 + ... + 23937.

It is an arithmetic number, because the mean of its divisors is an integer number (895050).

Almost surely, 2^20746968 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 20746968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28641600).

20746968 is an abundant number, since it is smaller than the sum of its proper divisors (36536232).

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

20746968 is a wasteful number, since it uses less digits than its factorization.

20746968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 992 (or 988 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 20746968 is about 4554.8839721776. The cubic root of 20746968 is about 274.7798480462.

The spelling of 20746968 in words is "twenty million, seven hundred forty-six thousand, nine hundred sixty-eight".