20255776 has 12 divisors (see below), whose sum is σ = 39878622. Its totient is φ = 10127872.

The previous prime is 20255773. The next prime is 20255783. The reversal of 20255776 is 67755202.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 20250000 + 5776 = 4500^2 + 76^2 .

It is a super-2 number, since 2×20255776² = 820592922724352, which contains 22 as substring.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (20255771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 316465 + ... + 316528.

Almost surely, 2^20255776 is an apocalyptic number.

It is an amenable number.

20255776 is a deficient number, since it is larger than the sum of its proper divisors (19622846).

20255776 is an equidigital number, since it uses as much as digits as its factorization.

20255776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633003 (or 632995 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 34.

The square root of 20255776 is about 4500.6417320200. The cubic root of 20255776 is about 272.5940017416.

It can be divided in two parts, 2025 and 5776, that multiplied together give a square (11696400 = 3420²).

The spelling of 20255776 in words is "twenty million, two hundred fifty-five thousand, seven hundred seventy-six".