40288906 has 8 divisors (see below), whose sum is σ = 69066720. Its totient is φ = 17266668.

The previous prime is 40288903. The next prime is 40288951. The reversal of 40288906 is 60988204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (40288903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1438876 + ... + 1438903.

It is an arithmetic number, because the mean of its divisors is an integer number (8633340).

Almost surely, 2^40288906 is an apocalyptic number.

40288906 is a deficient number, since it is larger than the sum of its proper divisors (28777814).

40288906 is a wasteful number, since it uses less digits than its factorization.

40288906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2877788.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 40288906 is about 6347.3542519699. The cubic root of 40288906 is about 342.8165854638.

The spelling of 40288906 in words is "forty million, two hundred eighty-eight thousand, nine hundred six".