274871385 has 48 divisors (see below), whose sum is σ = 531048960. Its totient is φ = 130705920.

The previous prime is 274871381. The next prime is 274871393. The reversal of 274871385 is 583178472.

It is not a de Polignac number, because 274871385 - 2² = 274871381 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 274871385.

It is not an unprimeable number, because it can be changed into a prime (274871381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5080 + ... + 23990.

It is an arithmetic number, because the mean of its divisors is an integer number (11063520).

Almost surely, 2^274871385 is an apocalyptic number.

It is an amenable number.

274871385 is a deficient number, since it is larger than the sum of its proper divisors (256177575).

274871385 is a wasteful number, since it uses less digits than its factorization.

274871385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18958 (or 18955 counting only the distinct ones).

The product of its digits is 376320, while the sum is 45.

The square root of 274871385 is about 16579.2456100994. The cubic root of 274871385 is about 650.1943284842.

The spelling of 274871385 in words is "two hundred seventy-four million, eight hundred seventy-one thousand, three hundred eighty-five".