7671131220 has 48 divisors (see below), whose sum is σ = 21568333248. Its totient is φ = 2037143040.

The previous prime is 7671131183. The next prime is 7671131239. The reversal of 7671131220 is 221311767.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 250794 + ... + 279713.

It is an arithmetic number, because the mean of its divisors is an integer number (449340276).

Almost surely, 2^7671131220 is an apocalyptic number.

It is an amenable number.

7671131220 is an abundant number, since it is smaller than the sum of its proper divisors (13897202028).

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

7671131220 is a wasteful number, since it uses less digits than its factorization.

7671131220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530760 (or 530758 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 30.

The square root of 7671131220 is about 87584.9942627160. The cubic root of 7671131220 is about 1972.2099123456.

Adding to 7671131220 its reverse (221311767), we get a palindrome (7892442987).

The spelling of 7671131220 in words is "seven billion, six hundred seventy-one million, one hundred thirty-one thousand, two hundred twenty".