1004213388 has 12 divisors (see below), whose sum is σ = 2343164600. Its totient is φ = 334737792.

The previous prime is 1004213383. The next prime is 1004213401. The reversal of 1004213388 is 8833124001.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (1004213383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41842213 + ... + 41842236.

Almost surely, 2^1004213388 is an apocalyptic number.

It is an amenable number.

1004213388 is an abundant number, since it is smaller than the sum of its proper divisors (1338951212).

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

1004213388 is a wasteful number, since it uses less digits than its factorization.

1004213388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83684456 (or 83684454 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 1004213388 is about 31689.3260893948. The cubic root of 1004213388 is about 1001.4024947556.

Adding to 1004213388 its reverse (8833124001), we get a palindrome (9837337389).

The spelling of 1004213388 in words is "one billion, four million, two hundred thirteen thousand, three hundred eighty-eight".