71393420 has 48 divisors (see below), whose sum is σ = 173042688. Its totient is φ = 24235200.

The previous prime is 71393417. The next prime is 71393501. The reversal of 71393420 is 2439317.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11945 + ... + 16895.

It is an arithmetic number, because the mean of its divisors is an integer number (3605056).

Almost surely, 2^71393420 is an apocalyptic number.

71393420 is a gapful number since it is divisible by the number (70) 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 71393420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86521344).

71393420 is an abundant number, since it is smaller than the sum of its proper divisors (101649268).

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

71393420 is a wasteful number, since it uses less digits than its factorization.

71393420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5070 (or 5068 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 71393420 is about 8449.4627048115. The cubic root of 71393420 is about 414.8451931428.

The spelling of 71393420 in words is "seventy-one million, three hundred ninety-three thousand, four hundred twenty".