71706228 has 48 divisors (see below), whose sum is σ = 192138240. Its totient is φ = 20584800.

The previous prime is 71706197. The next prime is 71706233. The reversal of 71706228 is 82260717.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11788 + ... + 16803.

It is an arithmetic number, because the mean of its divisors is an integer number (4002880).

Almost surely, 2^71706228 is an apocalyptic number.

It is an amenable number.

71706228 is an abundant number, since it is smaller than the sum of its proper divisors (120432012).

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

71706228 is a wasteful number, since it uses less digits than its factorization.

71706228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28628 (or 28626 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 71706228 is about 8467.9529993972. The cubic root of 71706228 is about 415.4501874219.

The spelling of 71706228 in words is "seventy-one million, seven hundred six thousand, two hundred twenty-eight".