27957293 has 12 divisors (see below), whose sum is σ = 35024220. Its totient is φ = 22119552.

The previous prime is 27957283. The next prime is 27957313. The reversal of 27957293 is 39275972.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 16144324 + 11812969 = 4018^2 + 3437^2 .

It is not a de Polignac number, because 27957293 - 2⁴ = 27957277 is a prime.

It is a super-2 number, since 2×27957293² = 1563220463775698, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27957233) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21308 + ... + 22581.

It is an arithmetic number, because the mean of its divisors is an integer number (2918685).

Almost surely, 2^27957293 is an apocalyptic number.

It is an amenable number.

27957293 is a deficient number, since it is larger than the sum of its proper divisors (7066927).

27957293 is a wasteful number, since it uses less digits than its factorization.

27957293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43916 (or 43909 counting only the distinct ones).

The product of its digits is 238140, while the sum is 44.

The square root of 27957293 is about 5287.4656500066. The cubic root of 27957293 is about 303.5044333846.

The spelling of 27957293 in words is "twenty-seven million, nine hundred fifty-seven thousand, two hundred ninety-three".