370221812 has 12 divisors (see below), whose sum is σ = 648080580. Its totient is φ = 185055936.

The previous prime is 370221779. The next prime is 370221829. The reversal of 370221812 is 218122073.

It can be written as a sum of positive squares in 2 ways, for example, as 17007376 + 353214436 = 4124^2 + 18794^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3938 + ... + 27494.

It is an arithmetic number, because the mean of its divisors is an integer number (54006715).

Almost surely, 2^370221812 is an apocalyptic number.

It is an amenable number.

370221812 is a deficient number, since it is larger than the sum of its proper divisors (277858768).

370221812 is a wasteful number, since it uses less digits than its factorization.

370221812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27490 (or 27488 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 370221812 is about 19241.1489261946. The cubic root of 370221812 is about 718.0488660446.

Adding to 370221812 its reverse (218122073), we get a palindrome (588343885).

The spelling of 370221812 in words is "three hundred seventy million, two hundred twenty-one thousand, eight hundred twelve".