1251288 has 40 divisors (see below), whose sum is σ = 3506580. Its totient is φ = 416880.

The previous prime is 1251287. The next prime is 1251301. The reversal of 1251288 is 8821521.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1251287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 318 + ... + 1613.

2^1251288 is an apocalyptic number.

1251288 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1251288 is an abundant number, since it is smaller than the sum of its proper divisors (2255292).

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

1251288 is a wasteful number, since it uses less digits than its factorization.

1251288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1949 (or 1936 counting only the distinct ones).

The product of its digits is 1280, while the sum is 27.

The square root of 1251288 is about 1118.6098515568. The cubic root of 1251288 is about 107.7587206261.

The spelling of 1251288 in words is "one million, two hundred fifty-one thousand, two hundred eighty-eight".