27123345 has 48 divisors (see below), whose sum is σ = 49153104. Its totient is φ = 13824000.

The previous prime is 27123329. The next prime is 27123353. The reversal of 27123345 is 54332172.

It can be written as a sum of positive squares in 8 ways, for example, as 6765201 + 20358144 = 2601^2 + 4512^2 .

It is not a de Polignac number, because 27123345 - 2⁴ = 27123329 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 112425 + ... + 112665.

It is an arithmetic number, because the mean of its divisors is an integer number (1024023).

Almost surely, 2^27123345 is an apocalyptic number.

It is an amenable number.

27123345 is a deficient number, since it is larger than the sum of its proper divisors (22029759).

27123345 is a wasteful number, since it uses less digits than its factorization.

27123345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354 (or 351 counting only the distinct ones).

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

The square root of 27123345 is about 5208.0077764919. The cubic root of 27123345 is about 300.4561394379.

The spelling of 27123345 in words is "twenty-seven million, one hundred twenty-three thousand, three hundred forty-five".