71889023 has 4 divisors (see below), whose sum is σ = 71926320. Its totient is φ = 71851728.

The previous prime is 71889017. The next prime is 71889047. The reversal of 71889023 is 32098817.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 71889023 - 2¹⁰ = 71887999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71889823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15590 + ... + 19667.

It is an arithmetic number, because the mean of its divisors is an integer number (17981580).

Almost surely, 2^71889023 is an apocalyptic number.

71889023 is a deficient number, since it is larger than the sum of its proper divisors (37297).

71889023 is a wasteful number, since it uses less digits than its factorization.

71889023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37296.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 71889023 is about 8478.7394699920. The cubic root of 71889023 is about 415.8029126045.

The spelling of 71889023 in words is "seventy-one million, eight hundred eighty-nine thousand, twenty-three".