2421004400 has 30 divisors (see below), whose sum is σ = 5816464032. Its totient is φ = 968401600.

The previous prime is 2421004381. The next prime is 2421004409. The reversal of 2421004400 is 44001242.

It is a super-2 number, since 2×2421004400² = 11722524609638720000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2421004409) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3025856 + ... + 3026655.

Almost surely, 2^2421004400 is an apocalyptic number.

2421004400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2421004400 is an abundant number, since it is smaller than the sum of its proper divisors (3395459632).

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

2421004400 is a wasteful number, since it uses less digits than its factorization.

2421004400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6052529 (or 6052518 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 2421004400 is about 49203.7031126723. The cubic root of 2421004400 is about 1342.7604045512.

Adding to 2421004400 its reverse (44001242), we get a palindrome (2465005642).

The spelling of 2421004400 in words is "two billion, four hundred twenty-one million, four thousand, four hundred".