40002838 has 8 divisors (see below), whose sum is σ = 60262488. Its totient is φ = 19915344.

The previous prime is 40002829. The next prime is 40002871. The reversal of 40002838 is 83820004.

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

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, 42456 + ... + 43387.

It is an arithmetic number, because the mean of its divisors is an integer number (7532811).

Almost surely, 2^40002838 is an apocalyptic number.

40002838 is a deficient number, since it is larger than the sum of its proper divisors (20259650).

40002838 is a wasteful number, since it uses less digits than its factorization.

40002838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86078.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 40002838 is about 6324.7796799572. The cubic root of 40002838 is about 342.0032773303.

The spelling of 40002838 in words is "forty million, two thousand, eight hundred thirty-eight".