2724780 has 24 divisors (see below), whose sum is σ = 7629552. Its totient is φ = 726592.

The previous prime is 2724779. The next prime is 2724803. The reversal of 2724780 is 874272.

2724780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22647 + ... + 22766.

It is an arithmetic number, because the mean of its divisors is an integer number (317898).

2^2724780 is an apocalyptic number.

2724780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2724780 is an abundant number, since it is smaller than the sum of its proper divisors (4904772).

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

2724780 is a wasteful number, since it uses less digits than its factorization.

2724780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45425 (or 45423 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 30.

The square root of 2724780 is about 1650.6907644983. The cubic root of 2724780 is about 139.6723630931.

The spelling of 2724780 in words is "two million, seven hundred twenty-four thousand, seven hundred eighty".