274840785 has 48 divisors (see below), whose sum is σ = 506624976. Its totient is φ = 137355264.

The previous prime is 274840759. The next prime is 274840789. The reversal of 274840785 is 587048472.

It can be written as a sum of positive squares in 8 ways, for example, as 18584721 + 256256064 = 4311^2 + 16008^2 .

It is not a de Polignac number, because 274840785 - 2⁶ = 274840721 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 274840785.

It is not an unprimeable number, because it can be changed into a prime (274840789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 211257 + ... + 212553.

It is an arithmetic number, because the mean of its divisors is an integer number (10554687).

Almost surely, 2^274840785 is an apocalyptic number.

It is an amenable number.

274840785 is a deficient number, since it is larger than the sum of its proper divisors (231784191).

274840785 is a wasteful number, since it uses less digits than its factorization.

274840785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1602 (or 1599 counting only the distinct ones).

The product of its (nonzero) digits is 501760, while the sum is 45.

The square root of 274840785 is about 16578.3227438725. The cubic root of 274840785 is about 650.1702000058.

It can be divided in two parts, 274840 and 785, that added together give a square (275625 = 525²).

The spelling of 274840785 in words is "two hundred seventy-four million, eight hundred forty thousand, seven hundred eighty-five".