40423878 has 24 divisors (see below), whose sum is σ = 95547816. Its totient is φ = 12249600.

The previous prime is 40423871. The next prime is 40423897. The reversal of 40423878 is 87832404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40423871) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 101883 + ... + 102278.

It is an arithmetic number, because the mean of its divisors is an integer number (3981159).

Almost surely, 2^40423878 is an apocalyptic number.

40423878 is an abundant number, since it is smaller than the sum of its proper divisors (55123938).

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

40423878 is a wasteful number, since it uses less digits than its factorization.

40423878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204180 (or 204177 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 40423878 is about 6357.9775086107. The cubic root of 40423878 is about 343.1989824248.

The spelling of 40423878 in words is "forty million, four hundred twenty-three thousand, eight hundred seventy-eight".