3212730 has 64 divisors (see below), whose sum is σ = 8737920. Its totient is φ = 839808.

The previous prime is 3212723. The next prime is 3212743. The reversal of 3212730 is 372123.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nialpdrome in base 13.

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, 19629 + ... + 19791.

It is an arithmetic number, because the mean of its divisors is an integer number (136530).

Almost surely, 2^3212730 is an apocalyptic number.

3212730 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 3212730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4368960).

3212730 is an abundant number, since it is smaller than the sum of its proper divisors (5525190).

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

3212730 is a wasteful number, since it uses less digits than its factorization.

3212730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252 (or 246 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 18.

The square root of 3212730 is about 1792.4089935057. The cubic root of 3212730 is about 147.5564085695.

Adding to 3212730 its reverse (372123), we get a palindrome (3584853).

The spelling of 3212730 in words is "three million, two hundred twelve thousand, seven hundred thirty".