73023981 has 8 divisors (see below), whose sum is σ = 98538720. Its totient is φ = 48095952.

The previous prime is 73023961. The next prime is 73023989. The reversal of 73023981 is 18932037.

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

It is not a de Polignac number, because 73023981 - 2⁵ = 73023949 is a prime.

It is a super-2 number, since 2×73023981² = 10665003602176722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73023989) 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, 146386 + ... + 146883.

It is an arithmetic number, because the mean of its divisors is an integer number (12317340).

Almost surely, 2^73023981 is an apocalyptic number.

It is an amenable number.

73023981 is a deficient number, since it is larger than the sum of its proper divisors (25514739).

73023981 is a wasteful number, since it uses less digits than its factorization.

73023981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293355.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 73023981 is about 8545.4070119568. The cubic root of 73023981 is about 417.9796793461.

The spelling of 73023981 in words is "seventy-three million, twenty-three thousand, nine hundred eighty-one".