1197988 has 24 divisors (see below), whose sum is σ = 2409120. Its totient is φ = 515520.

The previous prime is 1197971. The next prime is 1197997. The reversal of 1197988 is 8897911.

1197988 = 4⁷ + 5⁷ + ... + 7⁷.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120 + ... + 1552.

It is an arithmetic number, because the mean of its divisors is an integer number (100380).

2^1197988 is an apocalyptic number.

It is an amenable number.

1197988 is an abundant number, since it is smaller than the sum of its proper divisors (1211132).

1197988 is a wasteful number, since it uses less digits than its factorization.

1197988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1467 (or 1465 counting only the distinct ones).

The product of its digits is 36288, while the sum is 43.

The square root of 1197988 is about 1094.5263815916. The cubic root of 1197988 is about 106.2064328877.

The spelling of 1197988 in words is "one million, one hundred ninety-seven thousand, nine hundred eighty-eight".