1290772 has 12 divisors (see below), whose sum is σ = 2581600. Its totient is φ = 553176.

The previous prime is 1290719. The next prime is 1290791. The reversal of 1290772 is 2770921.

It is a happy number.

1290772 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 46099 = 1290772 / (1 + 2 + 9 + 0 + 7 + 7 + 2).

It is a self number, because there is not a number n which added to its sum of digits gives 1290772.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23022 + ... + 23077.

2^1290772 is an apocalyptic number.

It is an amenable number.

1290772 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1290772 is a wasteful number, since it uses less digits than its factorization.

1290772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46110 (or 46108 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 1290772 is about 1136.1214723787. The cubic root of 1290772 is about 108.8804345018.

The spelling of 1290772 in words is "one million, two hundred ninety thousand, seven hundred seventy-two".