73281769 has 8 divisors (see below), whose sum is σ = 80092512. Its totient is φ = 66495840.

The previous prime is 73281763. The next prime is 73281809. The reversal of 73281769 is 96718237.

It is a happy number.

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 73281769 - 2²³ = 64893161 is a prime.

It is a super-2 number, since 2×73281769² = 10740435335538722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73281763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 277 + ... + 12109.

It is an arithmetic number, because the mean of its divisors is an integer number (10011564).

Almost surely, 2^73281769 is an apocalyptic number.

It is an amenable number.

73281769 is a deficient number, since it is larger than the sum of its proper divisors (6810743).

73281769 is a wasteful number, since it uses less digits than its factorization.

73281769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12407.

The product of its digits is 127008, while the sum is 43.

The square root of 73281769 is about 8560.4771479165. The cubic root of 73281769 is about 418.4709499288.

The spelling of 73281769 in words is "seventy-three million, two hundred eighty-one thousand, seven hundred sixty-nine".