3213730 has 32 divisors (see below), whose sum is σ = 6350400. Its totient is φ = 1163712.

The previous prime is 3213689. The next prime is 3213737. The reversal of 3213730 is 373123.

It is a junction number, because it is equal to n+sod(n) for n = 3213698 and 3213707.

It is not an unprimeable number, because it can be changed into a prime (3213737) 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, 7461 + ... + 7879.

It is an arithmetic number, because the mean of its divisors is an integer number (198450).

Almost surely, 2^3213730 is an apocalyptic number.

3213730 is a deficient number, since it is larger than the sum of its proper divisors (3136670).

3213730 is a wasteful number, since it uses less digits than its factorization.

3213730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498.

The product of its (nonzero) digits is 378, while the sum is 19.

The square root of 3213730 is about 1792.6879259927. The cubic root of 3213730 is about 147.5717165372.

Adding to 3213730 its reverse (373123), we get a palindrome (3586853).

The spelling of 3213730 in words is "three million, two hundred thirteen thousand, seven hundred thirty".