20280627 has 12 divisors (see below), whose sum is σ = 29333304. Its totient is φ = 13502400.

The previous prime is 20280607. The next prime is 20280661. The reversal of 20280627 is 72608202.

It is not a de Polignac number, because 20280627 - 2⁷ = 20280499 is a prime.

It is a super-2 number, since 2×20280627² = 822607663026258, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20280627.

It is not an unprimeable number, because it can be changed into a prime (20280607) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12283 + ... + 13835.

It is an arithmetic number, because the mean of its divisors is an integer number (2444442).

Almost surely, 2^20280627 is an apocalyptic number.

20280627 is a deficient number, since it is larger than the sum of its proper divisors (9052677).

20280627 is a wasteful number, since it uses less digits than its factorization.

20280627 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3010 (or 3007 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 20280627 is about 4503.4017142600. The cubic root of 20280627 is about 272.7054344029.

Adding to 20280627 its reverse (72608202), we get a palindrome (92888829).

The spelling of 20280627 in words is "twenty million, two hundred eighty thousand, six hundred twenty-seven".