73681544 has 48 divisors (see below), whose sum is σ = 150693120. Its totient is φ = 33734880.

The previous prime is 73681529. The next prime is 73681561. The reversal of 73681544 is 44518637.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 73681498 and 73681507.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 89117 + ... + 89939.

It is an arithmetic number, because the mean of its divisors is an integer number (3139440).

Almost surely, 2^73681544 is an apocalyptic number.

It is an amenable number.

73681544 is an abundant number, since it is smaller than the sum of its proper divisors (77011576).

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

73681544 is a wasteful number, since it uses less digits than its factorization.

73681544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 898 (or 875 counting only the distinct ones).

The product of its digits is 80640, while the sum is 38.

The square root of 73681544 is about 8583.7954309268. The cubic root of 73681544 is about 419.2305337053.

The spelling of 73681544 in words is "seventy-three million, six hundred eighty-one thousand, five hundred forty-four".