1002261772 has 12 divisors (see below), whose sum is σ = 1801362640. Its totient is φ = 487586736.

The previous prime is 1002261737. The next prime is 1002261797. The reversal of 1002261772 is 2771622001.

It is a super-2 number, since 2×1002261772² = 2009057319225159968, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1002261772.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3385872 + ... + 3386167.

Almost surely, 2^1002261772 is an apocalyptic number.

It is an amenable number.

1002261772 is a deficient number, since it is larger than the sum of its proper divisors (799100868).

1002261772 is a wasteful number, since it uses less digits than its factorization.

1002261772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6772080 (or 6772078 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 1002261772 is about 31658.5181586252. The cubic root of 1002261772 is about 1000.7533563117.

Adding to 1002261772 its reverse (2771622001), we get a palindrome (3773883773).

The spelling of 1002261772 in words is "one billion, two million, two hundred sixty-one thousand, seven hundred seventy-two".