24402020 has 24 divisors (see below), whose sum is σ = 51823800. Its totient is φ = 9650432.

The previous prime is 24402019. The next prime is 24402031. The reversal of 24402020 is 2020442.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3020644 + 21381376 = 1738^2 + 4624^2 .

It is a junction number, because it is equal to n+sod(n) for n = 24401986 and 24402004.

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, 5075 + ... + 8634.

It is an arithmetic number, because the mean of its divisors is an integer number (2159325).

Almost surely, 2^24402020 is an apocalyptic number.

24402020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

24402020 is an abundant number, since it is smaller than the sum of its proper divisors (27421780).

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

24402020 is a wasteful number, since it uses less digits than its factorization.

24402020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13807 (or 13805 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 24402020 is about 4939.8400783831. The cubic root of 24402020 is about 290.0515960515.

Adding to 24402020 its reverse (2020442), we get a palindrome (26422462).

The spelling of 24402020 in words is "twenty-four million, four hundred two thousand, twenty".