2724440 has 16 divisors (see below), whose sum is σ = 6130080. Its totient is φ = 1089760.

The previous prime is 2724427. The next prime is 2724479. The reversal of 2724440 is 444272.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34016 + ... + 34095.

It is an arithmetic number, because the mean of its divisors is an integer number (383130).

2^2724440 is an apocalyptic number.

2724440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2724440 is an abundant number, since it is smaller than the sum of its proper divisors (3405640).

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

2724440 is a wasteful number, since it uses less digits than its factorization.

2724440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68122 (or 68118 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 23.

The square root of 2724440 is about 1650.5877740975. The cubic root of 2724440 is about 139.6665533789. Note that the first 3 decimals are identical.

The spelling of 2724440 in words is "two million, seven hundred twenty-four thousand, four hundred forty".