71477928 has 96 divisors (see below), whose sum is σ = 213969600. Its totient is φ = 21441024.

The previous prime is 71477899. The next prime is 71477933. The reversal of 71477928 is 82977417.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26883 + ... + 29421.

It is an arithmetic number, because the mean of its divisors is an integer number (2228850).

Almost surely, 2^71477928 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 71477928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106984800).

71477928 is an abundant number, since it is smaller than the sum of its proper divisors (142491672).

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

71477928 is a wasteful number, since it uses less digits than its factorization.

71477928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2591 (or 2584 counting only the distinct ones).

The product of its digits is 197568, while the sum is 45.

The square root of 71477928 is about 8454.4620171836. The cubic root of 71477928 is about 415.0088119288.

The spelling of 71477928 in words is "seventy-one million, four hundred seventy-seven thousand, nine hundred twenty-eight".