27646140 has 48 divisors (see below), whose sum is σ = 81486720. Its totient is φ = 6984000.

The previous prime is 27646133. The next prime is 27646153. The reversal of 27646140 is 4164672.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 27646098 and 27646107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10986 + ... + 13265.

It is an arithmetic number, because the mean of its divisors is an integer number (1697640).

Almost surely, 2^27646140 is an apocalyptic number.

27646140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27646140 is an abundant number, since it is smaller than the sum of its proper divisors (53840580).

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

27646140 is a wasteful number, since it uses less digits than its factorization.

27646140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24282 (or 24280 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 27646140 is about 5257.9596803323. The cubic root of 27646140 is about 302.3742709976.

The spelling of 27646140 in words is "twenty-seven million, six hundred forty-six thousand, one hundred forty".