40540452 has 48 divisors (see below), whose sum is σ = 100094400. Its totient is φ = 12735360.

The previous prime is 40540447. The next prime is 40540453. The reversal of 40540452 is 25404504.

It is not an unprimeable number, because it can be changed into a prime (40540453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61002 + ... + 61662.

It is an arithmetic number, because the mean of its divisors is an integer number (2085300).

Almost surely, 2^40540452 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 40540452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50047200).

40540452 is an abundant number, since it is smaller than the sum of its proper divisors (59553948).

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

40540452 is a wasteful number, since it uses less digits than its factorization.

40540452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 956 (or 954 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 40540452 is about 6367.1384467436. The cubic root of 40540452 is about 343.5285704748.

Adding to 40540452 its reverse (25404504), we get a palindrome (65944956).

The spelling of 40540452 in words is "forty million, five hundred forty thousand, four hundred fifty-two".