1251836 has 12 divisors (see below), whose sum is σ = 2208360. Its totient is φ = 620880.

The previous prime is 1251827. The next prime is 1251841. The reversal of 1251836 is 6381521.

It is an Ulam number.

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, 671 + ... + 1718.

It is an arithmetic number, because the mean of its divisors is an integer number (184030).

2^1251836 is an apocalyptic number.

It is an amenable number.

1251836 is a deficient number, since it is larger than the sum of its proper divisors (956524).

1251836 is a wasteful number, since it uses less digits than its factorization.

1251836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2524 (or 2522 counting only the distinct ones).

The product of its digits is 1440, while the sum is 26.

The square root of 1251836 is about 1118.8547716303. The cubic root of 1251836 is about 107.7744492621.

The spelling of 1251836 in words is "one million, two hundred fifty-one thousand, eight hundred thirty-six".