22503840 has 96 divisors (see below), whose sum is σ = 71559936. Its totient is φ = 5944320.

The previous prime is 22503829. The next prime is 22503851. The reversal of 22503840 is 4830522.

It is an interprime number because it is at equal distance from previous prime (22503829) and next prime (22503851).

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 22503840.

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 15 ways as a sum of consecutive naturals, for example, 82905 + ... + 83175.

It is an arithmetic number, because the mean of its divisors is an integer number (745416).

Almost surely, 2^22503840 is an apocalyptic number.

22503840 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 22503840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35779968).

22503840 is an abundant number, since it is smaller than the sum of its proper divisors (49056096).

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

22503840 is a wasteful number, since it uses less digits than its factorization.

22503840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462 (or 454 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 22503840 is about 4743.8212445243. The cubic root of 22503840 is about 282.3268680990.

The spelling of 22503840 in words is "twenty-two million, five hundred three thousand, eight hundred forty".