274897728 has 168 divisors, whose sum is σ = 931956480. Its totient is φ = 75801600.

The previous prime is 274897669. The next prime is 274897747. The reversal of 274897728 is 827798472.

It is a tau number, because it is divible by the number of its divisors (168).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 115753 + ... + 118103.

It is an arithmetic number, because the mean of its divisors is an integer number (5547360).

Almost surely, 2^274897728 is an apocalyptic number.

274897728 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 274897728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (465978240).

274897728 is an abundant number, since it is smaller than the sum of its proper divisors (657058752).

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

274897728 is a wasteful number, since it uses less digits than its factorization.

274897728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2405 (or 2392 counting only the distinct ones).

The product of its digits is 3161088, while the sum is 54.

The square root of 274897728 is about 16580.0400482025. The cubic root of 274897728 is about 650.2150988311.

It can be divided in two parts, 274897 and 728, that added together give a square (275625 = 525²).

The spelling of 274897728 in words is "two hundred seventy-four million, eight hundred ninety-seven thousand, seven hundred twenty-eight".