24100020 has 144 divisors (see below), whose sum is σ = 86381568. Its totient is φ = 5322240.

The previous prime is 24100019. The next prime is 24100031. The reversal of 24100020 is 2000142.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 24099975 and 24100011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 38752 + ... + 39368.

It is an arithmetic number, because the mean of its divisors is an integer number (599872).

Almost surely, 2^24100020 is an apocalyptic number.

24100020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 24100020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43190784).

24100020 is an abundant number, since it is smaller than the sum of its proper divisors (62281548).

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

24100020 is a wasteful number, since it uses less digits than its factorization.

24100020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670 (or 665 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 24100020 is about 4909.1771204551. The cubic root of 24100020 is about 288.8500637063.

Adding to 24100020 its reverse (2000142), we get a palindrome (26100162).

The spelling of 24100020 in words is "twenty-four million, one hundred thousand, twenty".