73421136 has 60 divisors (see below), whose sum is σ = 207986688. Its totient is φ = 24174912.

The previous prime is 73421093. The next prime is 73421141. The reversal of 73421136 is 63112437.

It is a congruent number.

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, 8881 + ... + 15023.

Almost surely, 2^73421136 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 73421136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103993344).

73421136 is an abundant number, since it is smaller than the sum of its proper divisors (134565552).

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

73421136 is a wasteful number, since it uses less digits than its factorization.

73421136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6240 (or 6231 counting only the distinct ones).

The product of its digits is 3024, while the sum is 27.

The square root of 73421136 is about 8568.6134234192. The cubic root of 73421136 is about 418.7360641089.

The spelling of 73421136 in words is "seventy-three million, four hundred twenty-one thousand, one hundred thirty-six".