40545392 has 40 divisors (see below), whose sum is σ = 84734160. Its totient is φ = 18731520.

The previous prime is 40545383. The next prime is 40545409. The reversal of 40545392 is 29354504.

It is a happy number.

It is a congruent number.

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, 10838 + ... + 14090.

It is an arithmetic number, because the mean of its divisors is an integer number (2118354).

Almost surely, 2^40545392 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 40545392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42367080).

40545392 is an abundant number, since it is smaller than the sum of its proper divisors (44188768).

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

40545392 is a wasteful number, since it uses less digits than its factorization.

40545392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3321 (or 3315 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 40545392 is about 6367.5263642956. The cubic root of 40545392 is about 343.5425233057.

Adding to 40545392 its reverse (29354504), we get a palindrome (69899896).

The spelling of 40545392 in words is "forty million, five hundred forty-five thousand, three hundred ninety-two".