71402448 has 160 divisors (see below), whose sum is σ = 215986176. Its totient is φ = 20127744.

The previous prime is 71402423. The next prime is 71402459. The reversal of 71402448 is 84420417.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 562161 + ... + 562287.

Almost surely, 2^71402448 is an apocalyptic number.

71402448 is a gapful number since it is divisible by the number (78) 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 71402448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107993088).

71402448 is an abundant number, since it is smaller than the sum of its proper divisors (144583728).

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

71402448 is a wasteful number, since it uses less digits than its factorization.

71402448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221 (or 215 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 30.

The square root of 71402448 is about 8449.9969230764. The cubic root of 71402448 is about 414.8626787157.

The spelling of 71402448 in words is "seventy-one million, four hundred two thousand, four hundred forty-eight".