27650020 has 12 divisors (see below), whose sum is σ = 58065084. Its totient is φ = 11060000.

The previous prime is 27650009. The next prime is 27650033. The reversal of 27650020 is 2005672.

It can be written as a sum of positive squares in 2 ways, for example, as 20848356 + 6801664 = 4566^2 + 2608^2 .

It is a junction number, because it is equal to n+sod(n) for n = 27649973 and 27650000.

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, 691231 + ... + 691270.

It is an arithmetic number, because the mean of its divisors is an integer number (4838757).

Almost surely, 2^27650020 is an apocalyptic number.

27650020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27650020 is an abundant number, since it is smaller than the sum of its proper divisors (30415064).

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

27650020 is a wasteful number, since it uses less digits than its factorization.

27650020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1382510 (or 1382508 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 27650020 is about 5258.3286317993. The cubic root of 27650020 is about 302.3884159173.

Adding to 27650020 its reverse (2005672), we get a palindrome (29655692).

The spelling of 27650020 in words is "twenty-seven million, six hundred fifty thousand, twenty".