73421144 has 32 divisors (see below), whose sum is σ = 145152000. Its totient is φ = 34764960.

The previous prime is 73421141. The next prime is 73421197. The reversal of 73421144 is 44112437.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73421141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8507 + ... + 14805.

It is an arithmetic number, because the mean of its divisors is an integer number (4536000).

Almost surely, 2^73421144 is an apocalyptic number.

It is an amenable number.

73421144 is a deficient number, since it is larger than the sum of its proper divisors (71730856).

73421144 is a wasteful number, since it uses less digits than its factorization.

73421144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6383 (or 6379 counting only the distinct ones).

The product of its digits is 2688, while the sum is 26.

The square root of 73421144 is about 8568.6138902392. The cubic root of 73421144 is about 418.7360793174.

The spelling of 73421144 in words is "seventy-three million, four hundred twenty-one thousand, one hundred forty-four".