274923945 has 36 divisors (see below), whose sum is σ = 498197700. Its totient is φ = 140238912.

The previous prime is 274923931. The next prime is 274923959. The reversal of 274923945 is 549329472.

It is an interprime number because it is at equal distance from previous prime (274923931) and next prime (274923959).

It can be written as a sum of positive squares in 2 ways, for example, as 198133776 + 76790169 = 14076^2 + 8763^2 .

It is not a de Polignac number, because 274923945 - 2⁹ = 274923433 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 274923945.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 18031 + ... + 29579.

It is an arithmetic number, because the mean of its divisors is an integer number (13838825).

Almost surely, 2^274923945 is an apocalyptic number.

It is an amenable number.

274923945 is a deficient number, since it is larger than the sum of its proper divisors (223273755).

274923945 is a wasteful number, since it uses less digits than its factorization.

274923945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11606 (or 11580 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The square root of 274923945 is about 16580.8306486738. The cubic root of 274923945 is about 650.2357685149.

The spelling of 274923945 in words is "two hundred seventy-four million, nine hundred twenty-three thousand, nine hundred forty-five".