2421684 has 48 divisors (see below), whose sum is σ = 6652800. Its totient is φ = 759168.

The previous prime is 2421673. The next prime is 2421707. The reversal of 2421684 is 4861242.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1177 + ... + 2495.

It is an arithmetic number, because the mean of its divisors is an integer number (138600).

2^2421684 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2421684, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3326400).

2421684 is an abundant number, since it is smaller than the sum of its proper divisors (4231116).

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

2421684 is a wasteful number, since it uses less digits than its factorization.

2421684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1349 (or 1341 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

The square root of 2421684 is about 1556.1760825819. The cubic root of 2421684 is about 134.2886034861.

The spelling of 2421684 in words is "two million, four hundred twenty-one thousand, six hundred eighty-four".