73491768 has 144 divisors (see below), whose sum is σ = 238216680. Its totient is φ = 20393856.

The previous prime is 73491767. The next prime is 73491779. The reversal of 73491768 is 86719437.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73491767) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 130255 + ... + 130817.

Almost surely, 2^73491768 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 73491768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119108340).

73491768 is an abundant number, since it is smaller than the sum of its proper divisors (164724912).

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

73491768 is a wasteful number, since it uses less digits than its factorization.

73491768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626 (or 612 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 73491768 is about 8572.7339863080. The cubic root of 73491768 is about 418.8702974198.

The spelling of 73491768 in words is "seventy-three million, four hundred ninety-one thousand, seven hundred sixty-eight".