274729728 has 144 divisors (see below), whose sum is σ = 900144896. Its totient is φ = 72437760.

The previous prime is 274729727. The next prime is 274729753. The reversal of 274729728 is 827927472.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (274729727) 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, 67923 + ... + 71853.

Almost surely, 2^274729728 is an apocalyptic number.

274729728 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 274729728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (450072448).

274729728 is an abundant number, since it is smaller than the sum of its proper divisors (625415168).

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

274729728 is a wasteful number, since it uses less digits than its factorization.

274729728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3970 (or 3956 counting only the distinct ones).

The product of its digits is 790272, while the sum is 48.

The square root of 274729728 is about 16574.9729411544. The cubic root of 274729728 is about 650.0826151402.

The spelling of 274729728 in words is "two hundred seventy-four million, seven hundred twenty-nine thousand, seven hundred twenty-eight".