32280000 has 140 divisors (see below), whose sum is σ = 107121960. Its totient is φ = 8576000.

The previous prime is 32279999. The next prime is 32280007. The reversal of 32280000 is 8223.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32280007) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 119866 + ... + 120134.

Almost surely, 2^32280000 is an apocalyptic number.

32280000 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 32280000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53560980).

32280000 is an abundant number, since it is smaller than the sum of its proper divisors (74841960).

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

32280000 is an equidigital number, since it uses as much as digits as its factorization.

32280000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304 (or 279 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 32280000 is about 5681.5490845367. The cubic root of 32280000 is about 318.4035066068.

Adding to 32280000 its reverse (8223), we get a palindrome (32288223).

The spelling of 32280000 in words is "thirty-two million, two hundred eighty thousand".