71224923 has 16 divisors (see below), whose sum is σ = 118400256. Its totient is φ = 36999840.

The previous prime is 71224843. The next prime is 71224927. The reversal of 71224923 is 32942217.

It is not a de Polignac number, because 71224923 - 2¹² = 71220827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71224927) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153936 + ... + 154397.

It is an arithmetic number, because the mean of its divisors is an integer number (7400016).

Almost surely, 2^71224923 is an apocalyptic number.

71224923 is a deficient number, since it is larger than the sum of its proper divisors (47175333).

71224923 is a wasteful number, since it uses less digits than its factorization.

71224923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308354.

The product of its digits is 6048, while the sum is 30.

The square root of 71224923 is about 8439.4859440608. The cubic root of 71224923 is about 414.5185746504.

The spelling of 71224923 in words is "seventy-one million, two hundred twenty-four thousand, nine hundred twenty-three".