71903232 has 144 divisors (see below), whose sum is σ = 214643520. Its totient is φ = 23175168.

The previous prime is 71903231. The next prime is 71903233. The reversal of 71903232 is 23230917.

It is an interprime number because it is at equal distance from previous prime (71903231) and next prime (71903233).

It is a tau number, because it is divible by the number of its divisors (144).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 71903196 and 71903205.

It is not an unprimeable number, because it can be changed into a prime (71903231) 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, 866263 + ... + 866345.

It is an arithmetic number, because the mean of its divisors is an integer number (1490580).

Almost surely, 2^71903232 is an apocalyptic number.

71903232 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71903232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107321760).

71903232 is an abundant number, since it is smaller than the sum of its proper divisors (142740288).

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

71903232 is a wasteful number, since it uses less digits than its factorization.

71903232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158 (or 135 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 71903232 is about 8479.5773479579. The cubic root of 71903232 is about 415.8303055412.

The spelling of 71903232 in words is "seventy-one million, nine hundred three thousand, two hundred thirty-two".