274947987 has 16 divisors (see below), whose sum is σ = 388501920. Its totient is φ = 172365312.

The previous prime is 274947973. The next prime is 274947991. The reversal of 274947987 is 789749472.

It is a happy number.

It is not a de Polignac number, because 274947987 - 2⁴ = 274947971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (274947487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97189 + ... + 99977.

It is an arithmetic number, because the mean of its divisors is an integer number (24281370).

Almost surely, 2^274947987 is an apocalyptic number.

274947987 is a deficient number, since it is larger than the sum of its proper divisors (113553933).

274947987 is a wasteful number, since it uses less digits than its factorization.

274947987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4742.

The product of its digits is 7112448, while the sum is 57.

The square root of 274947987 is about 16581.5556266594. Note that the first 3 decimals coincide. The cubic root of 274947987 is about 650.2547222570.

The spelling of 274947987 in words is "two hundred seventy-four million, nine hundred forty-seven thousand, nine hundred eighty-seven".