73081420 has 24 divisors (see below), whose sum is σ = 154123200. Its totient is φ = 29108352.

The previous prime is 73081409. The next prime is 73081439. The reversal of 73081420 is 2418037.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2865 + ... + 12424.

It is an arithmetic number, because the mean of its divisors is an integer number (6421800).

Almost surely, 2^73081420 is an apocalyptic number.

It is an amenable number.

73081420 is an abundant number, since it is smaller than the sum of its proper divisors (81041780).

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

73081420 is a wasteful number, since it uses less digits than its factorization.

73081420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15537 (or 15535 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 73081420 is about 8548.7671625796. The cubic root of 73081420 is about 418.0892417228.

Adding to 73081420 its reverse (2418037), we get a palindrome (75499457).

The spelling of 73081420 in words is "seventy-three million, eighty-one thousand, four hundred twenty".