73405144 has 16 divisors (see below), whose sum is σ = 143619120. Its totient is φ = 35106720.

The previous prime is 73405127. The next prime is 73405147. The reversal of 73405144 is 44150437.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73405147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 199287 + ... + 199654.

It is an arithmetic number, because the mean of its divisors is an integer number (8976195).

Almost surely, 2^73405144 is an apocalyptic number.

It is an amenable number.

73405144 is a deficient number, since it is larger than the sum of its proper divisors (70213976).

73405144 is a wasteful number, since it uses less digits than its factorization.

73405144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398970 (or 398966 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 73405144 is about 8567.6801994472. The cubic root of 73405144 is about 418.7056599966.

The spelling of 73405144 in words is "seventy-three million, four hundred five thousand, one hundred forty-four".