20766496 has 12 divisors (see below), whose sum is σ = 40884102. Its totient is φ = 10383232.

The previous prime is 20766479. The next prime is 20766521. The reversal of 20766496 is 69466702.

It can be written as a sum of positive squares in only one way, i.e., 14714896 + 6051600 = 3836^2 + 2460^2 .

It is a super-2 number, since 2×20766496² = 862494712236032, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324445 + ... + 324508.

Almost surely, 2^20766496 is an apocalyptic number.

It is an amenable number.

20766496 is a deficient number, since it is larger than the sum of its proper divisors (20117606).

20766496 is an equidigital number, since it uses as much as digits as its factorization.

20766496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648963 (or 648955 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 20766496 is about 4557.0271010825. The cubic root of 20766496 is about 274.8660328197.

The spelling of 20766496 in words is "twenty million, seven hundred sixty-six thousand, four hundred ninety-six".