274891005 has 12 divisors (see below), whose sum is σ = 476477820. Its totient is φ = 146608512.

The previous prime is 274890997. The next prime is 274891013. The reversal of 274891005 is 500198472.

It is an interprime number because it is at equal distance from previous prime (274890997) and next prime (274891013).

It can be written as a sum of positive squares in 2 ways, for example, as 124411716 + 150479289 = 11154^2 + 12267^2 .

It is not a de Polignac number, because 274891005 - 2³ = 274890997 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3054300 + ... + 3054389.

It is an arithmetic number, because the mean of its divisors is an integer number (39706485).

Almost surely, 2^274891005 is an apocalyptic number.

It is an amenable number.

274891005 is a deficient number, since it is larger than the sum of its proper divisors (201586815).

274891005 is a wasteful number, since it uses less digits than its factorization.

274891005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6108700 (or 6108697 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 274891005 is about 16579.8373031824. The cubic root of 274891005 is about 650.2097981546.

The spelling of 274891005 in words is "two hundred seventy-four million, eight hundred ninety-one thousand, five".