73423644 has 24 divisors (see below), whose sum is σ = 195796608. Its totient is φ = 20978160.

The previous prime is 73423639. The next prime is 73423703. The reversal of 73423644 is 44632437.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

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, 436962 + ... + 437129.

It is an arithmetic number, because the mean of its divisors is an integer number (8158192).

Almost surely, 2^73423644 is an apocalyptic number.

It is an amenable number.

73423644 is an abundant number, since it is smaller than the sum of its proper divisors (122372964).

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

73423644 is a wasteful number, since it uses less digits than its factorization.

73423644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 874105 (or 874103 counting only the distinct ones).

The product of its digits is 48384, while the sum is 33.

The square root of 73423644 is about 8568.7597702351. The cubic root of 73423644 is about 418.7408319371.

The spelling of 73423644 in words is "seventy-three million, four hundred twenty-three thousand, six hundred forty-four".