73888981 has 8 divisors (see below), whose sum is σ = 74983424. Its totient is φ = 72802800.

The previous prime is 73888979. The next prime is 73888993. The reversal of 73888981 is 18988837.

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 73888981 - 2¹ = 73888979 is a prime.

It is a super-2 number, since 2×73888981² = 10919163026436722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73888931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17251 + ... + 21103.

It is an arithmetic number, because the mean of its divisors is an integer number (9372928).

Almost surely, 2^73888981 is an apocalyptic number.

It is an amenable number.

73888981 is a deficient number, since it is larger than the sum of its proper divisors (1094443).

73888981 is a wasteful number, since it uses less digits than its factorization.

73888981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4131.

The product of its digits is 774144, while the sum is 52.

The square root of 73888981 is about 8595.8699966903. The cubic root of 73888981 is about 419.6235875445.

The spelling of 73888981 in words is "seventy-three million, eight hundred eighty-eight thousand, nine hundred eighty-one".