73644238 has 8 divisors (see below), whose sum is σ = 116964432. Its totient is φ = 34656096.

The previous prime is 73644223. The next prime is 73644269. The reversal of 73644238 is 83244637.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 73644197 and 73644206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1082970 + ... + 1083037.

It is an arithmetic number, because the mean of its divisors is an integer number (14620554).

Almost surely, 2^73644238 is an apocalyptic number.

73644238 is a deficient number, since it is larger than the sum of its proper divisors (43320194).

73644238 is a wasteful number, since it uses less digits than its factorization.

73644238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2166026.

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

The square root of 73644238 is about 8581.6221077370. The cubic root of 73644238 is about 419.1597676593.

The spelling of 73644238 in words is "seventy-three million, six hundred forty-four thousand, two hundred thirty-eight".