73681488 has 70 divisors (see below), whose sum is σ = 214072794. Its totient is φ = 24556608.

The previous prime is 73681481. The next prime is 73681511. The reversal of 73681488 is 88418637.

It can be written as a sum of positive squares in only one way, i.e., 63872064 + 9809424 = 7992^2 + 3132^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73681481) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 8506 + ... + 14822.

Almost surely, 2^73681488 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 73681488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107036397).

73681488 is an abundant number, since it is smaller than the sum of its proper divisors (140391306).

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

73681488 is an equidigital number, since it uses as much as digits as its factorization.

73681488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6343 (or 6322 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The square root of 73681488 is about 8583.7921689659. The cubic root of 73681488 is about 419.2304274963.

The spelling of 73681488 in words is "seventy-three million, six hundred eighty-one thousand, four hundred eighty-eight".