1167840 has 72 divisors (see below), whose sum is σ = 3990168. Its totient is φ = 311040.

The previous prime is 1167839. The next prime is 1167841. The reversal of 1167840 is 487611.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1167839) and next prime (1167841).

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1167841) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1035 + ... + 1845.

It is an arithmetic number, because the mean of its divisors is an integer number (55419).

2^1167840 is an apocalyptic number.

1167840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1167840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1995084).

1167840 is an abundant number, since it is smaller than the sum of its proper divisors (2822328).

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

1167840 is a wasteful number, since it uses less digits than its factorization.

1167840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 832 (or 821 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 1167840 is about 1080.6664610323. Note that the first 3 decimals coincide. The cubic root of 1167840 is about 105.3079395425.

The spelling of 1167840 in words is "one million, one hundred sixty-seven thousand, eight hundred forty".