32278872 has 64 divisors (see below), whose sum is σ = 86227200. Its totient is φ = 10039680.

The previous prime is 32278823. The next prime is 32278877. The reversal of 32278872 is 27887223.

It is a self number, because there is not a number n which added to its sum of digits gives 32278872.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32278877) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31878 + ... + 32874.

It is an arithmetic number, because the mean of its divisors is an integer number (1347300).

Almost surely, 2^32278872 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 32278872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43113600).

32278872 is an abundant number, since it is smaller than the sum of its proper divisors (53948328).

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

32278872 is a wasteful number, since it uses less digits than its factorization.

32278872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1096 (or 1092 counting only the distinct ones).

The product of its digits is 75264, while the sum is 39.

The square root of 32278872 is about 5681.4498149680. The cubic root of 32278872 is about 318.3997977743.

The spelling of 32278872 in words is "thirty-two million, two hundred seventy-eight thousand, eight hundred seventy-two".