86919228 has 72 divisors (see below), whose sum is σ = 242126976. Its totient is φ = 26071200.

The previous prime is 86919227. The next prime is 86919233. The reversal of 86919228 is 82291968.

It is a super-2 number, since 2×86919228² = 15109904392231968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86919223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39723 + ... + 41853.

Almost surely, 2^86919228 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 86919228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121063488).

86919228 is an abundant number, since it is smaller than the sum of its proper divisors (155207748).

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

86919228 is a wasteful number, since it uses less digits than its factorization.

86919228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2255 (or 2250 counting only the distinct ones).

The product of its digits is 124416, while the sum is 45.

The square root of 86919228 is about 9323.0482139695. The cubic root of 86919228 is about 442.9675915192.

The spelling of 86919228 in words is "eighty-six million, nine hundred nineteen thousand, two hundred twenty-eight".