27750940 has 24 divisors (see below), whose sum is σ = 66602592. Its totient is φ = 9514560.

The previous prime is 27750937. The next prime is 27750979. The reversal of 27750940 is 4905772.

It is a super-2 number, since 2×27750940² = 1540229341767200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27750896 and 27750905.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98971 + ... + 99250.

It is an arithmetic number, because the mean of its divisors is an integer number (2775108).

Almost surely, 2^27750940 is an apocalyptic number.

27750940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27750940 is an abundant number, since it is smaller than the sum of its proper divisors (38851652).

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

27750940 is a wasteful number, since it uses less digits than its factorization.

27750940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198237 (or 198235 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 27750940 is about 5267.9160965224. The cubic root of 27750940 is about 302.7558657530.

The spelling of 27750940 in words is "twenty-seven million, seven hundred fifty thousand, nine hundred forty".