73981516 has 48 divisors (see below), whose sum is σ = 158457600. Its totient is φ = 29515968.

The previous prime is 73981493. The next prime is 73981541. The reversal of 73981516 is 61518937.

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, 30210 + ... + 32566.

It is an arithmetic number, because the mean of its divisors is an integer number (3301200).

Almost surely, 2^73981516 is an apocalyptic number.

73981516 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 73981516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79228800).

73981516 is an abundant number, since it is smaller than the sum of its proper divisors (84476084).

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

73981516 is a wasteful number, since it uses less digits than its factorization.

73981516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2446 (or 2444 counting only the distinct ones).

The product of its digits is 45360, while the sum is 40.

The square root of 73981516 is about 8601.2508392675. The cubic root of 73981516 is about 419.7986865911.

The spelling of 73981516 in words is "seventy-three million, nine hundred eighty-one thousand, five hundred sixteen".