40228491 has 8 divisors (see below), whose sum is σ = 56461120. Its totient is φ = 25407432.

The previous prime is 40228471. The next prime is 40228493. The reversal of 40228491 is 19482204.

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

It is not a de Polignac number, because 40228491 - 2⁶ = 40228427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40228493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 352825 + ... + 352938.

It is an arithmetic number, because the mean of its divisors is an integer number (7057640).

Almost surely, 2^40228491 is an apocalyptic number.

40228491 is a deficient number, since it is larger than the sum of its proper divisors (16232629).

40228491 is a wasteful number, since it uses less digits than its factorization.

40228491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705785.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 40228491 is about 6342.5933970262. The cubic root of 40228491 is about 342.6451435195.

The spelling of 40228491 in words is "forty million, two hundred twenty-eight thousand, four hundred ninety-one".