73243648 has 22 divisors (see below), whose sum is σ = 146417816. Its totient is φ = 36621312.

The previous prime is 73243637. The next prime is 73243649. The reversal of 73243648 is 84634237.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73243649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34740 + ... + 36787.

Almost surely, 2^73243648 is an apocalyptic number.

It is an amenable number.

73243648 is a deficient number, since it is larger than the sum of its proper divisors (73174168).

73243648 is an equidigital number, since it uses as much as digits as its factorization.

73243648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71547 (or 71529 counting only the distinct ones).

The product of its digits is 96768, while the sum is 37.

The square root of 73243648 is about 8558.2502884643. The cubic root of 73243648 is about 418.3983748156.

The spelling of 73243648 in words is "seventy-three million, two hundred forty-three thousand, six hundred forty-eight".