274779945 has 80 divisors (see below), whose sum is σ = 552201408. Its totient is φ = 129548160.

The previous prime is 274779943. The next prime is 274779949. The reversal of 274779945 is 549977472.

It is not a de Polignac number, because 274779945 - 2¹ = 274779943 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 274779891 and 274779900.

It is not an unprimeable number, because it can be changed into a prime (274779943) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 164002 + ... + 165668.

Almost surely, 2^274779945 is an apocalyptic number.

It is an amenable number.

274779945 is an abundant number, since it is smaller than the sum of its proper divisors (277421463).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

274779945 is a wasteful number, since it uses less digits than its factorization.

274779945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1732 (or 1723 counting only the distinct ones).

The product of its digits is 4445280, while the sum is 54.

The square root of 274779945 is about 16576.4877160392. The cubic root of 274779945 is about 650.1222215928.

The spelling of 274779945 in words is "two hundred seventy-four million, seven hundred seventy-nine thousand, nine hundred forty-five".