40278924 has 48 divisors (see below), whose sum is σ = 119347200. Its totient is φ = 11508048.

The previous prime is 40278923. The next prime is 40278989. The reversal of 40278924 is 42987204.

40278924 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 (36).

It is not an unprimeable number, because it can be changed into a prime (40278923) 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 15 ways as a sum of consecutive naturals, for example, 25884 + ... + 27395.

It is an arithmetic number, because the mean of its divisors is an integer number (2486400).

Almost surely, 2^40278924 is an apocalyptic number.

It is an amenable number.

40278924 is an abundant number, since it is smaller than the sum of its proper divisors (79068276).

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

40278924 is a wasteful number, since it uses less digits than its factorization.

40278924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53299 (or 53291 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 40278924 is about 6346.5678913882. The cubic root of 40278924 is about 342.7882709876.

The spelling of 40278924 in words is "forty million, two hundred seventy-eight thousand, nine hundred twenty-four".