2820727251 has 24 divisors (see below), whose sum is σ = 4296211920. Its totient is φ = 1778443776.

The previous prime is 2820727249. The next prime is 2820727271. The reversal of 2820727251 is 1527270282.

It is not a de Polignac number, because 2820727251 - 2¹ = 2820727249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2820727211) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 87495 + ... + 115311.

It is an arithmetic number, because the mean of its divisors is an integer number (179008830).

Almost surely, 2^2820727251 is an apocalyptic number.

2820727251 is a deficient number, since it is larger than the sum of its proper divisors (1475484669).

2820727251 is a wasteful number, since it uses less digits than its factorization.

2820727251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28435 (or 28432 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 36.

The square root of 2820727251 is about 53110.5192122992. The cubic root of 2820727251 is about 1412.9290837902.

The spelling of 2820727251 in words is "two billion, eight hundred twenty million, seven hundred twenty-seven thousand, two hundred fifty-one".