24172420 has 24 divisors (see below), whose sum is σ = 51408000. Its totient is φ = 9545952.

The previous prime is 24172403. The next prime is 24172439. The reversal of 24172420 is 2427142.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 24172391 and 24172400.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6070 + ... + 9229.

It is an arithmetic number, because the mean of its divisors is an integer number (2142000).

Almost surely, 2^24172420 is an apocalyptic number.

24172420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

24172420 is an abundant number, since it is smaller than the sum of its proper divisors (27235580).

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

24172420 is a wasteful number, since it uses less digits than its factorization.

24172420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15387 (or 15385 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 22.

The square root of 24172420 is about 4916.5455352310. The cubic root of 24172420 is about 289.1390238792.

Adding to 24172420 its reverse (2427142), we get a palindrome (26599562).

The spelling of 24172420 in words is "twenty-four million, one hundred seventy-two thousand, four hundred twenty".