71670228 has 24 divisors (see below), whose sum is σ = 191120832. Its totient is φ = 20477184.

The previous prime is 71670227. The next prime is 71670259. The reversal of 71670228 is 82207617.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71670227) 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, 426525 + ... + 426692.

It is an arithmetic number, because the mean of its divisors is an integer number (7963368).

Almost surely, 2^71670228 is an apocalyptic number.

It is an amenable number.

71670228 is an abundant number, since it is smaller than the sum of its proper divisors (119450604).

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

71670228 is a wasteful number, since it uses less digits than its factorization.

71670228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 853231 (or 853229 counting only the distinct ones).

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

The square root of 71670228 is about 8465.8270712317. The cubic root of 71670228 is about 415.3806504106.

The spelling of 71670228 in words is "seventy-one million, six hundred seventy thousand, two hundred twenty-eight".