1290788 has 12 divisors (see below), whose sum is σ = 2266992. Its totient is φ = 643080.

The previous prime is 1290719. The next prime is 1290791. The reversal of 1290788 is 8870921.

It is a happy number.

It is a super-2 number, since 2×1290788² = 3332267321888, which contains 22 as substring.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

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, 1523 + ... + 2213.

It is an arithmetic number, because the mean of its divisors is an integer number (188916).

2^1290788 is an apocalyptic number.

It is an amenable number.

1290788 is a deficient number, since it is larger than the sum of its proper divisors (976204).

1290788 is a wasteful number, since it uses less digits than its factorization.

1290788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1162 (or 1160 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 1290788 is about 1136.1285138575. The cubic root of 1290788 is about 108.8808843824.

The spelling of 1290788 in words is "one million, two hundred ninety thousand, seven hundred eighty-eight".