27300645 has 20 divisors (see below), whose sum is σ = 48939660. Its totient is φ = 14560128.

The previous prime is 27300641. The next prime is 27300653. The reversal of 27300645 is 54600372.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 13883076 + 13417569 = 3726^2 + 3663^2 .

It is not a de Polignac number, because 27300645 - 2² = 27300641 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27300641) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 33300 + ... + 34109.

It is an arithmetic number, because the mean of its divisors is an integer number (2446983).

Almost surely, 2^27300645 is an apocalyptic number.

It is an amenable number.

27300645 is a deficient number, since it is larger than the sum of its proper divisors (21639015).

27300645 is an equidigital number, since it uses as much as digits as its factorization.

27300645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67426 (or 67417 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 27300645 is about 5225.0019138752. The cubic root of 27300645 is about 301.1093924377.

The spelling of 27300645 in words is "twenty-seven million, three hundred thousand, six hundred forty-five".