2421536 has 24 divisors (see below), whose sum is σ = 5135004. Its totient is φ = 1117440.

The previous prime is 2421533. The next prime is 2421541. The reversal of 2421536 is 6351242.

It can be written as a sum of positive squares in 2 ways, for example, as 2421136 + 400 = 1556^2 + 20^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2421533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2495 + ... + 3326.

2^2421536 is an apocalyptic number.

2421536 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2421536 is an abundant number, since it is smaller than the sum of its proper divisors (2713468).

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

2421536 is a wasteful number, since it uses less digits than its factorization.

2421536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5844 (or 5836 counting only the distinct ones).

The product of its digits is 1440, while the sum is 23.

The square root of 2421536 is about 1556.1285293959. The cubic root of 2421536 is about 134.2858677702.

Adding to 2421536 its reverse (6351242), we get a palindrome (8772778).

The spelling of 2421536 in words is "two million, four hundred twenty-one thousand, five hundred thirty-six".