20576976 has 80 divisors (see below), whose sum is σ = 62091264. Its totient is φ = 5749632.

The previous prime is 20576971. The next prime is 20576993. The reversal of 20576976 is 67967502.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20576971) 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, 15141 + ... + 16443.

Almost surely, 2^20576976 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 20576976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31045632).

20576976 is an abundant number, since it is smaller than the sum of its proper divisors (41514288).

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

20576976 is a wasteful number, since it uses less digits than its factorization.

20576976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1368 (or 1362 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 42.

The square root of 20576976 is about 4536.1851814052. The cubic root of 20576976 is about 274.0273118210.

The spelling of 20576976 in words is "twenty million, five hundred seventy-six thousand, nine hundred seventy-six".