22547340 has 72 divisors (see below), whose sum is σ = 68817840. Its totient is φ = 5975424.

The previous prime is 22547333. The next prime is 22547347. The reversal of 22547340 is 4374522.

It is an interprime number because it is at equal distance from previous prime (22547333) and next prime (22547347).

It is not an unprimeable number, because it can be changed into a prime (22547347) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40947 + ... + 41493.

Almost surely, 2^22547340 is an apocalyptic number.

22547340 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 22547340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34408920).

22547340 is an abundant number, since it is smaller than the sum of its proper divisors (46270500).

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

22547340 is a wasteful number, since it uses less digits than its factorization.

22547340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 791 (or 786 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 22547340 is about 4748.4039423790. The cubic root of 22547340 is about 282.5086639471.

The spelling of 22547340 in words is "twenty-two million, five hundred forty-seven thousand, three hundred forty".