73378213 has 8 divisors (see below), whose sum is σ = 74592000. Its totient is φ = 72170208.

The previous prime is 73378177. The next prime is 73378223. The reversal of 73378213 is 31287337.

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

It is a cyclic number.

It is not a de Polignac number, because 73378213 - 2²¹ = 71281061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73378223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29388 + ... + 31786.

It is an arithmetic number, because the mean of its divisors is an integer number (9324000).

Almost surely, 2^73378213 is an apocalyptic number.

73378213 is a gapful number since it is divisible by the number (73) formed by its first and last digit.

It is an amenable number.

73378213 is a deficient number, since it is larger than the sum of its proper divisors (1213787).

73378213 is a wasteful number, since it uses less digits than its factorization.

73378213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2891.

The product of its digits is 21168, while the sum is 34.

The square root of 73378213 is about 8566.1083929635. The cubic root of 73378213 is about 418.6544485928.

The spelling of 73378213 in words is "seventy-three million, three hundred seventy-eight thousand, two hundred thirteen".