22432040 has 32 divisors (see below), whose sum is σ = 50625000. Its totient is φ = 8945664.

The previous prime is 22432037. The next prime is 22432057. The reversal of 22432040 is 4023422.

It can be written as a sum of positive squares in 4 ways, for example, as 18130564 + 4301476 = 4258^2 + 2074^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17336 + ... + 18584.

Almost surely, 2^22432040 is an apocalyptic number.

22432040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22432040 is an abundant number, since it is smaller than the sum of its proper divisors (28192960).

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

22432040 is a wasteful number, since it uses less digits than its factorization.

22432040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1709 (or 1705 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 22432040 is about 4736.2474597512. The cubic root of 22432040 is about 282.0262873069.

Adding to 22432040 its reverse (4023422), we get a palindrome (26455462).

The spelling of 22432040 in words is "twenty-two million, four hundred thirty-two thousand, forty".