71819808 has 48 divisors (see below), whose sum is σ = 194616576. Its totient is φ = 23166720.

The previous prime is 71819801. The next prime is 71819819. The reversal of 71819808 is 80891817.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 71819808.

It is not an unprimeable number, because it can be changed into a prime (71819801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9091 + ... + 15042.

It is an arithmetic number, because the mean of its divisors is an integer number (4054512).

Almost surely, 2^71819808 is an apocalyptic number.

It is an amenable number.

71819808 is an abundant number, since it is smaller than the sum of its proper divisors (122796768).

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

71819808 is a wasteful number, since it uses less digits than its factorization.

71819808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24177 (or 24169 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 42.

The square root of 71819808 is about 8474.6568072105. The cubic root of 71819808 is about 415.6694242601.

It can be divided in two parts, 71819 and 808, that added together give a palindrome (72627).

The spelling of 71819808 in words is "seventy-one million, eight hundred nineteen thousand, eight hundred eight".