1153920 has 64 divisors (see below), whose sum is σ = 3684240. Its totient is φ = 307200.

The previous prime is 1153891. The next prime is 1153921. The reversal of 1153920 is 293511.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1153921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1620 + ... + 2220.

2^1153920 is an apocalyptic number.

1153920 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 1153920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1842120).

1153920 is an abundant number, since it is smaller than the sum of its proper divisors (2530320).

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

1153920 is an equidigital number, since it uses as much as digits as its factorization.

1153920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623 (or 611 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 21.

The square root of 1153920 is about 1074.2066840231. The cubic root of 1153920 is about 104.8878621411.

The spelling of 1153920 in words is "one million, one hundred fifty-three thousand, nine hundred twenty".