71839488 has 216 divisors, whose sum is σ = 234880128. Its totient is φ = 19396608.

The previous prime is 71839487. The next prime is 71839499. The reversal of 71839488 is 88493817.

It is a super-2 number, since 2×71839488² = 10321824072204288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71839487) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 865495 + ... + 865577.

It is an arithmetic number, because the mean of its divisors is an integer number (1087408).

Almost surely, 2^71839488 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 71839488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117440064).

71839488 is an abundant number, since it is smaller than the sum of its proper divisors (163040640).

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

71839488 is a wasteful number, since it uses less digits than its factorization.

71839488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139 (or 118 counting only the distinct ones).

The product of its digits is 387072, while the sum is 48.

The square root of 71839488 is about 8475.8178366456. The cubic root of 71839488 is about 415.7073879149.

It can be divided in two parts, 71839 and 488, that added together give a palindrome (72327).

The spelling of 71839488 in words is "seventy-one million, eight hundred thirty-nine thousand, four hundred eighty-eight".