40844556828 has 72 divisors (see below), whose sum is σ = 109348092672. Its totient is φ = 13325159664.

The previous prime is 40844556827. The next prime is 40844556947. The reversal of 40844556828 is 82865544804.

40844556828 is a `hidden beast` number, since 4 + 0 + 8 + 4 + 4 + 556 + 82 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40844556827) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 401350 + ... + 492717.

Almost surely, 2^40844556828 is an apocalyptic number.

It is an amenable number.

40844556828 is an abundant number, since it is smaller than the sum of its proper divisors (68503535844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40844556828 is a wasteful number, since it uses less digits than its factorization.

40844556828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894133 (or 894119 counting only the distinct ones).

The product of its (nonzero) digits is 9830400, while the sum is 54.

The spelling of 40844556828 in words is "forty billion, eight hundred forty-four million, five hundred fifty-six thousand, eight hundred twenty-eight".