1205988 has 48 divisors (see below), whose sum is σ = 3292800. Its totient is φ = 343392.

The previous prime is 1205977. The next prime is 1205999. The reversal of 1205988 is 8895021.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1205977) and next prime (1205999).

It is a super-2 number, since 2×1205988² = 2908814112288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3970 + ... + 4262.

It is an arithmetic number, because the mean of its divisors is an integer number (68600).

2^1205988 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1205988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1646400).

1205988 is an abundant number, since it is smaller than the sum of its proper divisors (2086812).

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

1205988 is a wasteful number, since it uses less digits than its factorization.

1205988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321 (or 305 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 33.

The square root of 1205988 is about 1098.1748494661. The cubic root of 1205988 is about 106.4423192692.

Adding to 1205988 its sum of digits (33), we get a palindrome (1206021).

The spelling of 1205988 in words is "one million, two hundred five thousand, nine hundred eighty-eight".