274861391 has 16 divisors (see below), whose sum is σ = 342067200. Its totient is φ = 215496288.

The previous prime is 274861381. The next prime is 274861409. The reversal of 274861391 is 193168472.

It is not a de Polignac number, because 274861391 - 2¹⁴ = 274845007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (274861381) 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, 31775 + ... + 39488.

It is an arithmetic number, because the mean of its divisors is an integer number (21379200).

Almost surely, 2^274861391 is an apocalyptic number.

274861391 is a deficient number, since it is larger than the sum of its proper divisors (67205809).

274861391 is a wasteful number, since it uses less digits than its factorization.

274861391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71318.

The product of its digits is 72576, while the sum is 41.

The square root of 274861391 is about 16578.9442064324. The cubic root of 274861391 is about 650.1864482886.

The spelling of 274861391 in words is "two hundred seventy-four million, eight hundred sixty-one thousand, three hundred ninety-one".