1173920 has 96 divisors (see below), whose sum is σ = 3265920. Its totient is φ = 394240.

The previous prime is 1173917. The next prime is 1173937. The reversal of 1173920 is 293711.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

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, 40466 + ... + 40494.

It is an arithmetic number, because the mean of its divisors is an integer number (34020).

2^1173920 is an apocalyptic number.

1173920 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 1173920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1632960).

1173920 is an abundant number, since it is smaller than the sum of its proper divisors (2092000).

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

1173920 is a wasteful number, since it uses less digits than its factorization.

1173920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78 (or 70 counting only the distinct ones).

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 1173920 is about 1083.4758880566. The cubic root of 1173920 is about 105.4903744503.

1173920 divided by its sum of digits (23) gives a triangular number (51040 = T₃₁₉).

The spelling of 1173920 in words is "one million, one hundred seventy-three thousand, nine hundred twenty".