40623140 has 24 divisors (see below), whose sum is σ = 89799360. Its totient is φ = 15393888.

The previous prime is 40623137. The next prime is 40623179. The reversal of 40623140 is 4132604.

It is a happy number.

40623140 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 (20).

It is an unprimeable number.

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, 53072 + ... + 53831.

It is an arithmetic number, because the mean of its divisors is an integer number (3741640).

Almost surely, 2^40623140 is an apocalyptic number.

It is an amenable number.

40623140 is an abundant number, since it is smaller than the sum of its proper divisors (49176220).

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

40623140 is a wasteful number, since it uses less digits than its factorization.

40623140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106931 (or 106929 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 40623140 is about 6373.6284799163. The cubic root of 40623140 is about 343.7619702719.

Adding to 40623140 its reverse (4132604), we get a palindrome (44755744).

The spelling of 40623140 in words is "forty million, six hundred twenty-three thousand, one hundred forty".