85454220 has 24 divisors (see below), whose sum is σ = 239271984. Its totient is φ = 22787776.

The previous prime is 85454219. The next prime is 85454231. The reversal of 85454220 is 2245458.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 712059 + ... + 712178.

It is an arithmetic number, because the mean of its divisors is an integer number (9969666).

Almost surely, 2^85454220 is an apocalyptic number.

It is an amenable number.

85454220 is an abundant number, since it is smaller than the sum of its proper divisors (153817764).

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

85454220 is a wasteful number, since it uses less digits than its factorization.

85454220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1424249 (or 1424247 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 30.

The square root of 85454220 is about 9244.1451741089. The cubic root of 85454220 is about 440.4647637269.

Adding to 85454220 its reverse (2245458), we get a palindrome (87699678).

The spelling of 85454220 in words is "eighty-five million, four hundred fifty-four thousand, two hundred twenty".