27402145 has 8 divisors (see below), whose sum is σ = 33684840. Its totient is φ = 21386880.

The previous prime is 27402119. The next prime is 27402149. The reversal of 27402145 is 54120472.

It can be written as a sum of positive squares in 4 ways, for example, as 3038049 + 24364096 = 1743^2 + 4936^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 27402145 - 2²³ = 19013537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27402149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66630 + ... + 67039.

It is an arithmetic number, because the mean of its divisors is an integer number (4210605).

Almost surely, 2^27402145 is an apocalyptic number.

It is an amenable number.

27402145 is a deficient number, since it is larger than the sum of its proper divisors (6282695).

27402145 is a wasteful number, since it uses less digits than its factorization.

27402145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133715.

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 27402145 is about 5234.7058179042. The cubic root of 27402145 is about 301.4820918805.

The spelling of 27402145 in words is "twenty-seven million, four hundred two thousand, one hundred forty-five".