85470220 has 48 divisors (see below), whose sum is σ = 207331488. Its totient is φ = 29250560.

The previous prime is 85470181. The next prime is 85470239. The reversal of 85470220 is 2207458.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7687 + ... + 15166.

It is an arithmetic number, because the mean of its divisors is an integer number (4319406).

Almost surely, 2^85470220 is an apocalyptic number.

It is an amenable number.

85470220 is an abundant number, since it is smaller than the sum of its proper divisors (121861268).

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

85470220 is a wasteful number, since it uses less digits than its factorization.

85470220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22890 (or 22888 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 85470220 is about 9245.0105462352. The cubic root of 85470220 is about 440.4922521155.

Adding to 85470220 its reverse (2207458), we get a palindrome (87677678).

The spelling of 85470220 in words is "eighty-five million, four hundred seventy thousand, two hundred twenty".