20276768 has 12 divisors (see below), whose sum is σ = 39919950. Its totient is φ = 10138368.

The previous prime is 20276761. The next prime is 20276807. The reversal of 20276768 is 86767202.

It can be written as a sum of positive squares in only one way, i.e., 13454224 + 6822544 = 3668^2 + 2612^2 .

It is a super-2 number, since 2×20276768² = 822294641051648, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20276761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 316793 + ... + 316856.

Almost surely, 2^20276768 is an apocalyptic number.

It is an amenable number.

20276768 is a deficient number, since it is larger than the sum of its proper divisors (19643182).

20276768 is an equidigital number, since it uses as much as digits as its factorization.

20276768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633659 (or 633651 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 20276768 is about 4502.9732399827. The cubic root of 20276768 is about 272.6881364987.

The spelling of 20276768 in words is "twenty million, two hundred seventy-six thousand, seven hundred sixty-eight".