274728385 has 8 divisors (see below), whose sum is σ = 332755776. Its totient is φ = 217728240.

The previous prime is 274728379. The next prime is 274728401. The reversal of 274728385 is 583827472.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 274728385 - 2¹⁹ = 274204097 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256221 + ... + 257290.

It is an arithmetic number, because the mean of its divisors is an integer number (41594472).

Almost surely, 2^274728385 is an apocalyptic number.

It is an amenable number.

274728385 is a deficient number, since it is larger than the sum of its proper divisors (58027391).

274728385 is a wasteful number, since it uses less digits than its factorization.

274728385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513623.

The product of its digits is 752640, while the sum is 46.

The square root of 274728385 is about 16574.9324282182. The cubic root of 274728385 is about 650.0815558417.

The spelling of 274728385 in words is "two hundred seventy-four million, seven hundred twenty-eight thousand, three hundred eighty-five".