73644028000 has 96 divisors (see below), whose sum is σ = 181142619840. Its totient is φ = 29425177600.

The previous prime is 73644027991. The next prime is 73644028013. The reversal of 73644028000 is 82044637.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 3802341 + ... + 3821659.

It is an arithmetic number, because the mean of its divisors is an integer number (1886902290).

Almost surely, 2^73644028000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 73644028000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90571309920).

73644028000 is an abundant number, since it is smaller than the sum of its proper divisors (107498591840).

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

73644028000 is a wasteful number, since it uses less digits than its factorization.

73644028000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20297 (or 20279 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 34.

The spelling of 73644028000 in words is "seventy-three billion, six hundred forty-four million, twenty-eight thousand".