40228490 has 8 divisors (see below), whose sum is σ = 72411300. Its totient is φ = 16091392.

The previous prime is 40228471. The next prime is 40228493. The reversal of 40228490 is 9482204.

40228490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 39778249 + 450241 = 6307^2 + 671^2 .

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 (40228493) 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 3 ways as a sum of consecutive naturals, for example, 2011415 + ... + 2011434.

Almost surely, 2^40228490 is an apocalyptic number.

40228490 is a deficient number, since it is larger than the sum of its proper divisors (32182810).

40228490 is a wasteful number, since it uses less digits than its factorization.

40228490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4022856.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 40228490 is about 6342.5933181941. The cubic root of 40228490 is about 342.6451406804.

The spelling of 40228490 in words is "forty million, two hundred twenty-eight thousand, four hundred ninety".