71889045 has 8 divisors (see below), whose sum is σ = 115022496. Its totient is φ = 38340816.

The previous prime is 71889017. The next prime is 71889047. The reversal of 71889045 is 54098817.

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

It is not a de Polignac number, because 71889045 - 2⁶ = 71888981 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 71888988 and 71889006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71889047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2396287 + ... + 2396316.

It is an arithmetic number, because the mean of its divisors is an integer number (14377812).

Almost surely, 2^71889045 is an apocalyptic number.

It is an amenable number.

71889045 is a deficient number, since it is larger than the sum of its proper divisors (43133451).

71889045 is a wasteful number, since it uses less digits than its factorization.

71889045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4792611.

The product of its (nonzero) digits is 80640, while the sum is 42.

The square root of 71889045 is about 8478.7407673545. The cubic root of 71889045 is about 415.8029550201.

The spelling of 71889045 in words is "seventy-one million, eight hundred eighty-nine thousand, forty-five".