274139728 has 20 divisors (see below), whose sum is σ = 533492640. Its totient is φ = 136464224.

The previous prime is 274139713. The next prime is 274139729. The reversal of 274139728 is 827931472.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (274139729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34108 + ... + 41371.

It is an arithmetic number, because the mean of its divisors is an integer number (26674632).

Almost surely, 2^274139728 is an apocalyptic number.

It is an amenable number.

274139728 is a deficient number, since it is larger than the sum of its proper divisors (259352912).

274139728 is a wasteful number, since it uses less digits than its factorization.

274139728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75714 (or 75708 counting only the distinct ones).

The product of its digits is 169344, while the sum is 43.

The square root of 274139728 is about 16557.1654578916. The cubic root of 274139728 is about 649.6169166771.

The spelling of 274139728 in words is "two hundred seventy-four million, one hundred thirty-nine thousand, seven hundred twenty-eight".