8271864 has 48 divisors (see below), whose sum is σ = 22599720. Its totient is φ = 2733120.

The previous prime is 8271847. The next prime is 8271871. The reversal of 8271864 is 4681728.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8994 + ... + 9870.

Almost surely, 2^8271864 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 8271864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11299860).

8271864 is an abundant number, since it is smaller than the sum of its proper divisors (14327856).

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

8271864 is a wasteful number, since it uses less digits than its factorization.

8271864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020 (or 1013 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 8271864 is about 2876.0848388043. The cubic root of 8271864 is about 202.2403439238.

The spelling of 8271864 in words is "eight million, two hundred seventy-one thousand, eight hundred sixty-four".