20280696 has 32 divisors (see below), whose sum is σ = 52339200. Its totient is φ = 6541920.

The previous prime is 20280683. The next prime is 20280707. The reversal of 20280696 is 69608202.

It is a super-2 number, since 2×20280696² = 822613260488832, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12886 + ... + 14373.

It is an arithmetic number, because the mean of its divisors is an integer number (1635600).

Almost surely, 2^20280696 is an apocalyptic number.

It is an amenable number.

20280696 is an abundant number, since it is smaller than the sum of its proper divisors (32058504).

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

20280696 is a wasteful number, since it uses less digits than its factorization.

20280696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27299 (or 27295 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 20280696 is about 4503.4093751290. The cubic root of 20280696 is about 272.7057436743.

Adding to 20280696 its reverse (69608202), we get a palindrome (89888898).

The spelling of 20280696 in words is "twenty million, two hundred eighty thousand, six hundred ninety-six".