3281250 has 64 divisors (see below), whose sum is σ = 9374976. Its totient is φ = 750000.

The previous prime is 3281233. The next prime is 3281269. The reversal of 3281250 is 521823.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 468747 + ... + 468753.

It is an arithmetic number, because the mean of its divisors is an integer number (146484).

Almost surely, 2^3281250 is an apocalyptic number.

3281250 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3281250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4687488).

3281250 is an abundant number, since it is smaller than the sum of its proper divisors (6093726).

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

3281250 is an frugal number, since it uses more digits than its factorization.

3281250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47 (or 17 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 3281250 is about 1811.4220932737. The cubic root of 3281250 is about 148.5980488191.

The spelling of 3281250 in words is "three million, two hundred eighty-one thousand, two hundred fifty".