20027684 has 12 divisors (see below), whose sum is σ = 35127708. Its totient is φ = 9991200.

The previous prime is 20027677. The next prime is 20027699. The reversal of 20027684 is 48672002.

It can be written as a sum of positive squares in 2 ways, for example, as 7139584 + 12888100 = 2672^2 + 3590^2 .

It is a super-2 number, since 2×20027684² = 802216252807712, which contains 22 as substring.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3587 + ... + 7274.

It is an arithmetic number, because the mean of its divisors is an integer number (2927309).

Almost surely, 2^20027684 is an apocalyptic number.

It is an amenable number.

20027684 is a deficient number, since it is larger than the sum of its proper divisors (15100024).

20027684 is a wasteful number, since it uses less digits than its factorization.

20027684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11326 (or 11324 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 20027684 is about 4475.2300499527. The cubic root of 20027684 is about 271.5669471455.

Adding to 20027684 its reverse (48672002), we get a palindrome (68699686).

The spelling of 20027684 in words is "twenty million, twenty-seven thousand, six hundred eighty-four".