73263981 has 32 divisors (see below), whose sum is σ = 118451200. Its totient is φ = 39346560.

The previous prime is 73263979. The next prime is 73264001. The reversal of 73263981 is 18936237.

It is not a de Polignac number, because 73263981 - 2¹ = 73263979 is a prime.

It is a super-2 number, since 2×73263981² = 10735221823936722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73263941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54801 + ... + 56121.

It is an arithmetic number, because the mean of its divisors is an integer number (3701600).

Almost surely, 2^73263981 is an apocalyptic number.

It is an amenable number.

73263981 is a deficient number, since it is larger than the sum of its proper divisors (45187219).

73263981 is a wasteful number, since it uses less digits than its factorization.

73263981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1489.

The product of its digits is 54432, while the sum is 39.

The square root of 73263981 is about 8559.4381240827. The cubic root of 73263981 is about 418.4370881024.

The spelling of 73263981 in words is "seventy-three million, two hundred sixty-three thousand, nine hundred eighty-one".