73811345 has 16 divisors (see below), whose sum is σ = 89910912. Its totient is φ = 58164480.

The previous prime is 73811329. The next prime is 73811389. The reversal of 73811345 is 54311837.

It is not a de Polignac number, because 73811345 - 2⁴ = 73811329 is a prime.

It is a super-2 number, since 2×73811345² = 10896229301418050, which contains 22 as substring.

It is a Duffinian 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 15 ways as a sum of consecutive naturals, for example, 170249 + ... + 170681.

It is an arithmetic number, because the mean of its divisors is an integer number (5619432).

Almost surely, 2^73811345 is an apocalyptic number.

It is an amenable number.

73811345 is a deficient number, since it is larger than the sum of its proper divisors (16099567).

73811345 is a wasteful number, since it uses less digits than its factorization.

73811345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872.

The product of its digits is 10080, while the sum is 32.

The square root of 73811345 is about 8591.3529202332. The cubic root of 73811345 is about 419.4765682684.

The spelling of 73811345 in words is "seventy-three million, eight hundred eleven thousand, three hundred forty-five".