71429248 has 64 divisors (see below), whose sum is σ = 157137120. Its totient is φ = 32071680.

The previous prime is 71429209. The next prime is 71429261. The reversal of 71429248 is 84292417.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136315 + ... + 136837.

Almost surely, 2^71429248 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 71429248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78568560).

71429248 is an abundant number, since it is smaller than the sum of its proper divisors (85707872).

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

71429248 is a wasteful number, since it uses less digits than its factorization.

71429248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645 (or 633 counting only the distinct ones).

The product of its digits is 32256, while the sum is 37.

The square root of 71429248 is about 8451.5825736959. The cubic root of 71429248 is about 414.9145766985.

The spelling of 71429248 in words is "seventy-one million, four hundred twenty-nine thousand, two hundred forty-eight".