40223828 has 12 divisors (see below), whose sum is σ = 70488180. Its totient is φ = 20084352.

The previous prime is 40223789. The next prime is 40223831. The reversal of 40223828 is 82832204.

It can be written as a sum of positive squares in 2 ways, for example, as 4963984 + 35259844 = 2228^2 + 5938^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 40223828.

It is a congruent number.

It is an unprimeable number.

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, 3413 + ... + 9596.

It is an arithmetic number, because the mean of its divisors is an integer number (5874015).

Almost surely, 2^40223828 is an apocalyptic number.

It is an amenable number.

40223828 is a deficient number, since it is larger than the sum of its proper divisors (30264352).

40223828 is a wasteful number, since it uses less digits than its factorization.

40223828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13786 (or 13784 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 29.

The square root of 40223828 is about 6342.2257922594. The cubic root of 40223828 is about 342.6319040136.

The spelling of 40223828 in words is "forty million, two hundred twenty-three thousand, eight hundred twenty-eight".