2820155202 has 18 divisors (see below), whose sum is σ = 6110824473. Its totient is φ = 939976632.

The previous prime is 2820155167. The next prime is 2820155231. The reversal of 2820155202 is 2025510282.

It can be written as a sum of positive squares in 2 ways, for example, as 2088398601 + 731756601 = 45699^2 + 27051^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=37551.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 219048 + ... + 231564.

Almost surely, 2^2820155202 is an apocalyptic number.

2820155202 is an abundant number, since it is smaller than the sum of its proper divisors (3290669271).

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

2820155202 is an frugal number, since it uses more digits than its factorization.

2820155202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25042 (or 12522 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 2820155202 is about 53105.1334806721. The cubic root of 2820155202 is about 1412.8335624060.

Multiplying 2820155202 by its product of nonzero digits (3200), we get a square (9024496646400 = 3004080²).

Adding to 2820155202 its reverse (2025510282), we get a palindrome (4845665484).

The spelling of 2820155202 in words is "two billion, eight hundred twenty million, one hundred fifty-five thousand, two hundred two".