71428608 has 80 divisors (see below), whose sum is σ = 211474560. Its totient is φ = 23804928.

The previous prime is 71428607. The next prime is 71428613. The reversal of 71428608 is 80682417.

71428608 is a `hidden beast` number, since 7 + 1 + 42 + 8 + 608 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (71428603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11241 + ... + 16407.

It is an arithmetic number, because the mean of its divisors is an integer number (2643432).

Almost surely, 2^71428608 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 71428608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105737280).

71428608 is an abundant number, since it is smaller than the sum of its proper divisors (140045952).

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

71428608 is an equidigital number, since it uses as much as digits as its factorization.

71428608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5194 (or 5172 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 71428608 is about 8451.5447108798. The cubic root of 71428608 is about 414.9133374950.

The spelling of 71428608 in words is "seventy-one million, four hundred twenty-eight thousand, six hundred eight".