1002947772 has 24 divisors (see below), whose sum is σ = 2360924496. Its totient is φ = 331356928.

The previous prime is 1002947761. The next prime is 1002947773. The reversal of 1002947772 is 2777492001.

It is a self number, because there is not a number n which added to its sum of digits gives 1002947772.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002947773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 368463 + ... + 371174.

It is an arithmetic number, because the mean of its divisors is an integer number (98371854).

Almost surely, 2^1002947772 is an apocalyptic number.

1002947772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1002947772 is an abundant number, since it is smaller than the sum of its proper divisors (1357976724).

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

1002947772 is a wasteful number, since it uses less digits than its factorization.

1002947772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739757 (or 739755 counting only the distinct ones).

The product of its (nonzero) digits is 49392, while the sum is 39.

The square root of 1002947772 is about 31669.3506722193. The cubic root of 1002947772 is about 1000.9816267603.

The spelling of 1002947772 in words is "one billion, two million, nine hundred forty-seven thousand, seven hundred seventy-two".