1209768 has 64 divisors (see below), whose sum is σ = 3648000. Its totient is φ = 326592.

The previous prime is 1209763. The next prime is 1209773. The reversal of 1209768 is 8679021.

It is an interprime number because it is at equal distance from previous prime (1209763) and next prime (1209773).

It is a super-2 number, since 2×1209768² = 2927077227648, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1209763) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3003 + ... + 3381.

It is an arithmetic number, because the mean of its divisors is an integer number (57000).

2^1209768 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 1209768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1824000).

1209768 is an abundant number, since it is smaller than the sum of its proper divisors (2438232).

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

1209768 is a wasteful number, since it uses less digits than its factorization.

1209768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414 (or 410 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 1209768 is about 1099.8945403992. The cubic root of 1209768 is about 106.5534127808.

The spelling of 1209768 in words is "one million, two hundred nine thousand, seven hundred sixty-eight".