71890233 has 4 divisors (see below), whose sum is σ = 95853648. Its totient is φ = 47926820.

The previous prime is 71890193. The next prime is 71890267. The reversal of 71890233 is 33209817.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 71890233 - 2⁹ = 71889721 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 71890194 and 71890203.

It is not an unprimeable number, because it can be changed into a prime (71890633) 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 3 ways as a sum of consecutive naturals, for example, 11981703 + ... + 11981708.

It is an arithmetic number, because the mean of its divisors is an integer number (23963412).

Almost surely, 2^71890233 is an apocalyptic number.

It is an amenable number.

71890233 is a deficient number, since it is larger than the sum of its proper divisors (23963415).

71890233 is a wasteful number, since it uses less digits than its factorization.

71890233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23963414.

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

The square root of 71890233 is about 8478.8108246381. The cubic root of 71890233 is about 415.8052454535.

It can be divided in two parts, 718 and 90233, that added together give a triangular number (90951 = T₄₂₆).

The spelling of 71890233 in words is "seventy-one million, eight hundred ninety thousand, two hundred thirty-three".