1268992 has 18 divisors (see below), whose sum is σ = 2533538. Its totient is φ = 634368.

The previous prime is 1268963. The next prime is 1269001. The reversal of 1268992 is 2998621.

It can be written as a sum of positive squares in only one way, i.e., 1218816 + 50176 = 1104^2 + 224^2 .

It is a super-2 number, since 2×1268992² = 3220681392128, which contains 22 as substring.

It is a plaindrome in base 13.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2223 + ... + 2734.

2^1268992 is an apocalyptic number.

It is an amenable number.

1268992 is a deficient number, since it is larger than the sum of its proper divisors (1264546).

1268992 is an frugal number, since it uses more digits than its factorization.

1268992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4973 (or 4959 counting only the distinct ones).

The product of its digits is 15552, while the sum is 37.

The square root of 1268992 is about 1126.4954505012. The cubic root of 1268992 is about 108.2645548969.

The spelling of 1268992 in words is "one million, two hundred sixty-eight thousand, nine hundred ninety-two".