40543232 has 66 divisors (see below), whose sum is σ = 86723202. Its totient is φ = 18939904.

The previous prime is 40543229. The next prime is 40543253. The reversal of 40543232 is 23234504.

It can be written as a sum of positive squares in 3 ways, for example, as 18113536 + 22429696 = 4256^2 + 4736^2 .

It is a super-2 number, since 2×40543232² = 3287507322011648, which contains 22 as substring.

It is a nialpdrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 40543198 and 40543207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 295868 + ... + 296004.

Almost surely, 2^40543232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40543232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43361601).

40543232 is an abundant number, since it is smaller than the sum of its proper divisors (46179970).

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

40543232 is a wasteful number, since it uses less digits than its factorization.

40543232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191 (or 156 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 40543232 is about 6367.3567514315. The cubic root of 40543232 is about 343.5364226122.

Adding to 40543232 its reverse (23234504), we get a palindrome (63777736).

The spelling of 40543232 in words is "forty million, five hundred forty-three thousand, two hundred thirty-two".