1165920 has 96 divisors (see below), whose sum is σ = 4209408. Its totient is φ = 265728.

The previous prime is 1165919. The next prime is 1165921. The reversal of 1165920 is 295611.

It is an interprime number because it is at equal distance from previous prime (1165919) and next prime (1165921).

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1165921) 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, 3187 + ... + 3533.

It is an arithmetic number, because the mean of its divisors is an integer number (43848).

2^1165920 is an apocalyptic number.

1165920 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 1165920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2104704).

1165920 is an abundant number, since it is smaller than the sum of its proper divisors (3043488).

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

1165920 is a wasteful number, since it uses less digits than its factorization.

1165920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372 (or 364 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 1165920 is about 1079.7777549107. Note that the first 4 decimals coincide. The cubic root of 1165920 is about 105.2501970007.

The spelling of 1165920 in words is "one million, one hundred sixty-five thousand, nine hundred twenty".