73623381 has 16 divisors (see below), whose sum is σ = 106908480. Its totient is φ = 44795520.

The previous prime is 73623367. The next prime is 73623397. The reversal of 73623381 is 18332637.

It is not a de Polignac number, because 73623381 - 2⁵ = 73623349 is a prime.

It is a super-2 number, since 2×73623381² = 10840804459742322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73623281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7135 + ... + 14076.

It is an arithmetic number, because the mean of its divisors is an integer number (6681780).

Almost surely, 2^73623381 is an apocalyptic number.

It is an amenable number.

73623381 is a deficient number, since it is larger than the sum of its proper divisors (33285099).

73623381 is a wasteful number, since it uses less digits than its factorization.

73623381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21316.

The product of its digits is 18144, while the sum is 33.

The square root of 73623381 is about 8580.4068085377. The cubic root of 73623381 is about 419.1201934353.

The spelling of 73623381 in words is "seventy-three million, six hundred twenty-three thousand, three hundred eighty-one".