71428023 has 12 divisors (see below), whose sum is σ = 103296960. Its totient is φ = 47561856.

The previous prime is 71428013. The next prime is 71428037. The reversal of 71428023 is 32082417.

It is not a de Polignac number, because 71428023 - 2²¹ = 69330871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71428003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4090 + ... + 12632.

It is an arithmetic number, because the mean of its divisors is an integer number (8608080).

Almost surely, 2^71428023 is an apocalyptic number.

71428023 is a deficient number, since it is larger than the sum of its proper divisors (31868937).

71428023 is a wasteful number, since it uses less digits than its factorization.

71428023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9478 (or 9475 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 71428023 is about 8451.5101017510. The cubic root of 71428023 is about 414.9122047791.

The spelling of 71428023 in words is "seventy-one million, four hundred twenty-eight thousand, twenty-three".