2421744 has 40 divisors (see below), whose sum is σ = 6739152. Its totient is φ = 744960.

The previous prime is 2421743. The next prime is 2421767. The reversal of 2421744 is 4471242.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2421743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1317 + ... + 2564.

2^2421744 is an apocalyptic number.

2421744 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2421744 is an abundant number, since it is smaller than the sum of its proper divisors (4317408).

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

2421744 is a wasteful number, since it uses less digits than its factorization.

2421744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3905 (or 3899 counting only the distinct ones).

The product of its digits is 1792, while the sum is 24.

The square root of 2421744 is about 1556.1953604866. The cubic root of 2421744 is about 134.2897125283.

Adding to 2421744 its reverse (4471242), we get a palindrome (6892986).

The spelling of 2421744 in words is "two million, four hundred twenty-one thousand, seven hundred forty-four".