20946576 has 80 divisors (see below), whose sum is σ = 63868928. Its totient is φ = 5788800.

The previous prime is 20946571. The next prime is 20946577. The reversal of 20946576 is 67564902.

It is a super-2 number, since 2×20946576² = 877518092247552, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20946571) 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, 9411 + ... + 11421.

Almost surely, 2^20946576 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 20946576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31934464).

20946576 is an abundant number, since it is smaller than the sum of its proper divisors (42922352).

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

20946576 is a wasteful number, since it uses less digits than its factorization.

20946576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2060 (or 2054 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 20946576 is about 4576.7429466816. The cubic root of 20946576 is about 275.6582621917.

The spelling of 20946576 in words is "twenty million, nine hundred forty-six thousand, five hundred seventy-six".