8770138220 has 48 divisors (see below), whose sum is σ = 18578343168. Its totient is φ = 3477439680.

The previous prime is 8770138207. The next prime is 8770138253. The reversal of 8770138220 is 228310778.

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, 4209299 + ... + 4211381.

It is an arithmetic number, because the mean of its divisors is an integer number (387048816).

Almost surely, 2^8770138220 is an apocalyptic number.

It is an amenable number.

8770138220 is an abundant number, since it is smaller than the sum of its proper divisors (9808204948).

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

8770138220 is a wasteful number, since it uses less digits than its factorization.

8770138220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3830 (or 3828 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 38.

The square root of 8770138220 is about 93649.0161186972. The cubic root of 8770138220 is about 2062.2223024713. Note that the first 3 decimals are identical.

Adding to 8770138220 its reverse (228310778), we get a palindrome (8998448998).

The spelling of 8770138220 in words is "eight billion, seven hundred seventy million, one hundred thirty-eight thousand, two hundred twenty".