3212400 has 60 divisors (see below), whose sum is σ = 10294232. Its totient is φ = 856320.

The previous prime is 3212389. The next prime is 3212413. The reversal of 3212400 is 42123.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 139 + ... + 2538.

Almost surely, 2^3212400 is an apocalyptic number.

3212400 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 3212400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5147116).

3212400 is an abundant number, since it is smaller than the sum of its proper divisors (7081832).

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

3212400 is a wasteful number, since it uses less digits than its factorization.

3212400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2698 (or 2687 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 3212400 is about 1792.3169362588. The cubic root of 3212400 is about 147.5513562430.

Adding to 3212400 its reverse (42123), we get a palindrome (3254523).

The spelling of 3212400 in words is "three million, two hundred twelve thousand, four hundred".