2820215284 has 12 divisors (see below), whose sum is σ = 4937280964. Its totient is φ = 1409563584.

The previous prime is 2820215273. The next prime is 2820215303. The reversal of 2820215284 is 4825120282.

It can be written as a sum of positive squares in 2 ways, for example, as 2763815184 + 56400100 = 52572^2 + 7510^2 .

It is a super-2 number, since 2×2820215284² = 15907228496214401312, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124239 + ... + 145174.

Almost surely, 2^2820215284 is an apocalyptic number.

It is an amenable number.

2820215284 is a deficient number, since it is larger than the sum of its proper divisors (2117065680).

2820215284 is a wasteful number, since it uses less digits than its factorization.

2820215284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272034 (or 272032 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 34.

The square root of 2820215284 is about 53105.6991668503. The cubic root of 2820215284 is about 1412.8435955729.

The spelling of 2820215284 in words is "two billion, eight hundred twenty million, two hundred fifteen thousand, two hundred eighty-four".