40422840 has 32 divisors (see below), whose sum is σ = 121268880. Its totient is φ = 10779392.

The previous prime is 40422793. The next prime is 40422841. The reversal of 40422840 is 4822404.

40422840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 40422840.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40422841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168309 + ... + 168548.

Almost surely, 2^40422840 is an apocalyptic number.

40422840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40422840 is an abundant number, since it is smaller than the sum of its proper divisors (80846040).

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

40422840 is a wasteful number, since it uses less digits than its factorization.

40422840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336871 (or 336867 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

The square root of 40422840 is about 6357.8958783547. The cubic root of 40422840 is about 343.1960448575.

The spelling of 40422840 in words is "forty million, four hundred twenty-two thousand, eight hundred forty".