40254240 has 96 divisors (see below), whose sum is σ = 136575936. Its totient is φ = 9907200.

The previous prime is 40254229. The next prime is 40254259. The reversal of 40254240 is 4245204.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

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, 3015 + ... + 9465.

It is an arithmetic number, because the mean of its divisors is an integer number (1422666).

Almost surely, 2^40254240 is an apocalyptic number.

40254240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40254240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68287968).

40254240 is an abundant number, since it is smaller than the sum of its proper divisors (96321696).

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

40254240 is a wasteful number, since it uses less digits than its factorization.

40254240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6482 (or 6474 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 40254240 is about 6344.6229202373. The cubic root of 40254240 is about 342.7182334106.

Adding to 40254240 its reverse (4245204), we get a palindrome (44499444).

The spelling of 40254240 in words is "forty million, two hundred fifty-four thousand, two hundred forty".