1154720 has 48 divisors (see below), whose sum is σ = 3120768. Its totient is φ = 395520.

The previous prime is 1154707. The next prime is 1154723. The reversal of 1154720 is 274511.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1154692 and 1154701.

It is not an unprimeable number, because it can be changed into a prime (1154723) 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, 605 + ... + 1635.

It is an arithmetic number, because the mean of its divisors is an integer number (65016).

2^1154720 is an apocalyptic number.

1154720 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 1154720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1560384).

1154720 is an abundant number, since it is smaller than the sum of its proper divisors (1966048).

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

1154720 is a wasteful number, since it uses less digits than its factorization.

1154720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053 (or 1045 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 1154720 is about 1074.5789873248. The cubic root of 1154720 is about 104.9120957407.

Subtracting from 1154720 its product of nonzero digits (280), we obtain a triangular number (1154440 = T₁₅₁₉).

The spelling of 1154720 in words is "one million, one hundred fifty-four thousand, seven hundred twenty".