2724428 has 12 divisors (see below), whose sum is σ = 5448912. Its totient is φ = 1167600.

The previous prime is 2724427. The next prime is 2724479. The reversal of 2724428 is 8244272.

2724428 is an admirable number.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 2724428.

It is not an unprimeable number, because it can be changed into a prime (2724427) 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, 48623 + ... + 48678.

It is an arithmetic number, because the mean of its divisors is an integer number (454076).

2^2724428 is an apocalyptic number.

2724428 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2724428 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2724428 is a wasteful number, since it uses less digits than its factorization.

2724428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97312 (or 97310 counting only the distinct ones).

The product of its digits is 7168, while the sum is 29.

The square root of 2724428 is about 1650.5841390247. The cubic root of 2724428 is about 139.6663483214. Note that the first 3 decimals are identical.

It can be divided in two parts, 27244 and 28, that added together give a palindrome (27272).

The spelling of 2724428 in words is "two million, seven hundred twenty-four thousand, four hundred twenty-eight".