71863456 has 96 divisors (see below), whose sum is σ = 170311680. Its totient is φ = 29203200.

The previous prime is 71863391. The next prime is 71863457. The reversal of 71863456 is 65436817.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (71863457) 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, 548511 + ... + 548641.

It is an arithmetic number, because the mean of its divisors is an integer number (1774080).

Almost surely, 2^71863456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71863456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85155840).

71863456 is an abundant number, since it is smaller than the sum of its proper divisors (98448224).

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

71863456 is a wasteful number, since it uses less digits than its factorization.

71863456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258 (or 250 counting only the distinct ones).

The product of its digits is 120960, while the sum is 40.

The square root of 71863456 is about 8477.2316235903. The cubic root of 71863456 is about 415.7536139627.

The spelling of 71863456 in words is "seventy-one million, eight hundred sixty-three thousand, four hundred fifty-six".