71427816 has 48 divisors (see below), whose sum is σ = 197957760. Its totient is φ = 23254560.

The previous prime is 71427787. The next prime is 71427817. The reversal of 71427816 is 61872417.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (71427817) 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, 8440 + ... + 14631.

It is an arithmetic number, because the mean of its divisors is an integer number (4124120).

Almost surely, 2^71427816 is an apocalyptic number.

It is an amenable number.

71427816 is an abundant number, since it is smaller than the sum of its proper divisors (126529944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71427816 is a wasteful number, since it uses less digits than its factorization.

71427816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23126 (or 23119 counting only the distinct ones).

The product of its digits is 18816, while the sum is 36.

The square root of 71427816 is about 8451.4978554100. The cubic root of 71427816 is about 414.9118039704.

The spelling of 71427816 in words is "seventy-one million, four hundred twenty-seven thousand, eight hundred sixteen".