73801281 has 16 divisors (see below), whose sum is σ = 100875456. Its totient is φ = 47975616.

The previous prime is 73801261. The next prime is 73801283. The reversal of 73801281 is 18210837.

It is a happy number.

It is not a de Polignac number, because 73801281 - 2⁵ = 73801249 is a prime.

It is a super-2 number, since 2×73801281² = 10893258154481922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (73801283) by changing a digit.

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, 26166 + ... + 28848.

It is an arithmetic number, because the mean of its divisors is an integer number (6304716).

Almost surely, 2^73801281 is an apocalyptic number.

It is an amenable number.

73801281 is a deficient number, since it is larger than the sum of its proper divisors (27074175).

73801281 is a wasteful number, since it uses less digits than its factorization.

73801281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2912.

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 73801281 is about 8590.7671950764. The cubic root of 73801281 is about 419.4575025269.

The spelling of 73801281 in words is "seventy-three million, eight hundred one thousand, two hundred eighty-one".