22473440 has 72 divisors (see below), whose sum is σ = 58437288. Its totient is φ = 8099840.

The previous prime is 22473427. The next prime is 22473547. The reversal of 22473440 is 4437422.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 198824 + ... + 198936.

It is an arithmetic number, because the mean of its divisors is an integer number (811629).

Almost surely, 2^22473440 is an apocalyptic number.

22473440 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 22473440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29218644).

22473440 is an abundant number, since it is smaller than the sum of its proper divisors (35963848).

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

22473440 is a wasteful number, since it uses less digits than its factorization.

22473440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252 (or 131 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 26.

The square root of 22473440 is about 4740.6159937291. The cubic root of 22473440 is about 282.1996808509.

The spelling of 22473440 in words is "twenty-two million, four hundred seventy-three thousand, four hundred forty".