8115213204 has 72 divisors (see below), whose sum is σ = 24474468480. Its totient is φ = 2318630832.

The previous prime is 8115213193. The next prime is 8115213209. The reversal of 8115213204 is 4023125118.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8115213209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 761452 + ... + 772035.

Almost surely, 2^8115213204 is an apocalyptic number.

8115213204 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

8115213204 is an abundant number, since it is smaller than the sum of its proper divisors (16359255276).

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

8115213204 is a wasteful number, since it uses less digits than its factorization.

8115213204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1533514 (or 1533499 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 8115213204 is about 90084.4781524542. The cubic root of 8115213204 is about 2009.5553750327. Note that the first 3 decimals are identical.

The spelling of 8115213204 in words is "eight billion, one hundred fifteen million, two hundred thirteen thousand, two hundred four".