20287676 has 6 divisors (see below), whose sum is σ = 35503440. Its totient is φ = 10143836.

The previous prime is 20287637. The next prime is 20287703. The reversal of 20287676 is 67678202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2535956 + ... + 2535963.

It is an arithmetic number, because the mean of its divisors is an integer number (5917240).

Almost surely, 2^20287676 is an apocalyptic number.

It is an amenable number.

20287676 is a deficient number, since it is larger than the sum of its proper divisors (15215764).

20287676 is a wasteful number, since it uses less digits than its factorization.

20287676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5071923 (or 5071921 counting only the distinct ones).

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

The square root of 20287676 is about 4504.1842768697. The cubic root of 20287676 is about 272.7370257657.

It can be divided in two parts, 202 and 87676, that added together give a palindrome (87878).

The spelling of 20287676 in words is "twenty million, two hundred eighty-seven thousand, six hundred seventy-six".