40452040 has 32 divisors (see below), whose sum is σ = 91745280. Its totient is φ = 16051392.

The previous prime is 40452023. The next prime is 40452047. The reversal of 40452040 is 4025404.

It is a junction number, because it is equal to n+sod(n) for n = 40451999 and 40452017.

It is not an unprimeable number, because it can be changed into a prime (40452047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1099 + ... + 9061.

It is an arithmetic number, because the mean of its divisors is an integer number (2867040).

Almost surely, 2^40452040 is an apocalyptic number.

40452040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40452040 is an abundant number, since it is smaller than the sum of its proper divisors (51293240).

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

40452040 is a wasteful number, since it uses less digits than its factorization.

40452040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8101 (or 8097 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 40452040 is about 6360.1918210067. The cubic root of 40452040 is about 343.2786624441.

Adding to 40452040 its reverse (4025404), we get a palindrome (44477444).

The spelling of 40452040 in words is "forty million, four hundred fifty-two thousand, forty".