1210988 has 6 divisors (see below), whose sum is σ = 2119236. Its totient is φ = 605492.

The previous prime is 1210987. The next prime is 1210999. The reversal of 1210988 is 8890121.

It is a super-2 number, since 2×1210988² = 2932983872288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1210988.

It is not an unprimeable number, because it can be changed into a prime (1210987) 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 as a sum of consecutive naturals, namely, 151370 + ... + 151377.

It is an arithmetic number, because the mean of its divisors is an integer number (353206).

2^1210988 is an apocalyptic number.

It is an amenable number.

1210988 is a deficient number, since it is larger than the sum of its proper divisors (908248).

1210988 is a wasteful number, since it uses less digits than its factorization.

1210988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302751 (or 302749 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 29.

The square root of 1210988 is about 1100.4489992726. The cubic root of 1210988 is about 106.5892189546.

The spelling of 1210988 in words is "one million, two hundred ten thousand, nine hundred eighty-eight".