86533220 has 24 divisors (see below), whose sum is σ = 191284800. Its totient is φ = 32791392.

The previous prime is 86533217. The next prime is 86533231. The reversal of 86533220 is 2233568.

It is a nialpdrome in base 10.

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, 113480 + ... + 114239.

It is an arithmetic number, because the mean of its divisors is an integer number (7970200).

Almost surely, 2^86533220 is an apocalyptic number.

It is an amenable number.

86533220 is an abundant number, since it is smaller than the sum of its proper divisors (104751580).

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

86533220 is a wasteful number, since it uses less digits than its factorization.

86533220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227747 (or 227745 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 86533220 is about 9302.3233656974. The cubic root of 86533220 is about 442.3108792093.

Adding to 86533220 its reverse (2233568), we get a palindrome (88766788).

The spelling of 86533220 in words is "eighty-six million, five hundred thirty-three thousand, two hundred twenty".