2820615273 has 18 divisors (see below), whose sum is σ = 4739401914. Its totient is φ = 1611779904.

The previous prime is 2820615269. The next prime is 2820615319. The reversal of 2820615273 is 3725160282.

It can be written as a sum of positive squares in only one way, i.e., 2420935209 + 399680064 = 49203^2 + 19992^2 .

It is not a de Polignac number, because 2820615273 - 2² = 2820615269 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2820615223) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3197536 + ... + 3198417.

Almost surely, 2^2820615273 is an apocalyptic number.

It is an amenable number.

2820615273 is a deficient number, since it is larger than the sum of its proper divisors (1918786641).

2820615273 is a wasteful number, since it uses less digits than its factorization.

2820615273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6395973 (or 6395963 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 2820615273 is about 53109.4650038955. The cubic root of 2820615273 is about 1412.9103865947.

The spelling of 2820615273 in words is "two billion, eight hundred twenty million, six hundred fifteen thousand, two hundred seventy-three".