71693420 has 96 divisors (see below), whose sum is σ = 168920640. Its totient is φ = 25436160.

The previous prime is 71693411. The next prime is 71693473. The reversal of 71693420 is 2439617.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 515711 + ... + 515849.

It is an arithmetic number, because the mean of its divisors is an integer number (1759590).

Almost surely, 2^71693420 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 71693420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84460320).

71693420 is an abundant number, since it is smaller than the sum of its proper divisors (97227220).

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

71693420 is a wasteful number, since it uses less digits than its factorization.

71693420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243 (or 241 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 71693420 is about 8467.1967025693. The cubic root of 71693420 is about 415.4254503663.

The spelling of 71693420 in words is "seventy-one million, six hundred ninety-three thousand, four hundred twenty".