2151287262 has 24 divisors (see below), whose sum is σ = 4833757656. Its totient is φ = 717095592.

The previous prime is 2151287233. The next prime is 2151287269. The reversal of 2151287262 is 2627821512.

It is a happy number.

2151287262 is a `hidden beast` number, since 2 + 1 + 512 + 87 + 2 + 62 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151287269) 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 11 ways as a sum of consecutive naturals, for example, 2212773 + ... + 2213744.

It is an arithmetic number, because the mean of its divisors is an integer number (201406569).

Almost surely, 2^2151287262 is an apocalyptic number.

2151287262 is an abundant number, since it is smaller than the sum of its proper divisors (2682470394).

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

2151287262 is an equidigital number, since it uses as much as digits as its factorization.

2151287262 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4426534 (or 4426522 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 2151287262 is about 46381.9713035140. The cubic root of 2151287262 is about 1290.9204139783.

The spelling of 2151287262 in words is "two billion, one hundred fifty-one million, two hundred eighty-seven thousand, two hundred sixty-two".