40022240 has 48 divisors (see below), whose sum is σ = 97614720. Its totient is φ = 15490560.

The previous prime is 40022219. The next prime is 40022251. The reversal of 40022240 is 4222004.

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, 926 + ... + 8994.

It is an arithmetic number, because the mean of its divisors is an integer number (2033640).

Almost surely, 2^40022240 is an apocalyptic number.

40022240 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 40022240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48807360).

40022240 is an abundant number, since it is smaller than the sum of its proper divisors (57592480).

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

40022240 is a wasteful number, since it uses less digits than its factorization.

40022240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8115 (or 8107 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 40022240 is about 6326.3133023903. The cubic root of 40022240 is about 342.0585607004.

Adding to 40022240 its reverse (4222004), we get a palindrome (44244244).

The spelling of 40022240 in words is "forty million, twenty-two thousand, two hundred forty".