22471340 has 12 divisors (see below), whose sum is σ = 47189856. Its totient is φ = 8988528.

The previous prime is 22471333. The next prime is 22471349. The reversal of 22471340 is 4317422.

It is a super-2 number, since 2×22471340² = 1009922242791200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22471349) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 561764 + ... + 561803.

It is an arithmetic number, because the mean of its divisors is an integer number (3932488).

Almost surely, 2^22471340 is an apocalyptic number.

22471340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22471340 is an abundant number, since it is smaller than the sum of its proper divisors (24718516).

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

22471340 is a wasteful number, since it uses less digits than its factorization.

22471340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1123576 (or 1123574 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 22471340 is about 4740.3944983514. The cubic root of 22471340 is about 282.1908906554.

Adding to 22471340 its reverse (4317422), we get a palindrome (26788762).

The spelling of 22471340 in words is "twenty-two million, four hundred seventy-one thousand, three hundred forty".