1154320 has 40 divisors (see below), whose sum is σ = 2749824. Its totient is φ = 450432.

The previous prime is 1154311. The next prime is 1154323. The reversal of 1154320 is 234511.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1154294 and 1154303.

It is not an unprimeable number, because it can be changed into a prime (1154323) 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, 3607 + ... + 3913.

2^1154320 is an apocalyptic number.

1154320 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 1154320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1374912).

1154320 is an abundant number, since it is smaller than the sum of its proper divisors (1595504).

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

1154320 is a wasteful number, since it uses less digits than its factorization.

1154320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367 (or 361 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 1154320 is about 1074.3928518005. The cubic root of 1154320 is about 104.8999803405.

Adding to 1154320 its product of nonzero digits (120), we get a triangular number (1154440 = T₁₅₁₉).

Adding to 1154320 its reverse (234511), we get a palindrome (1388831).

It can be divided in two parts, 11543 and 20, that multiplied together give a triangular number (230860 = T₆₇₉).

The spelling of 1154320 in words is "one million, one hundred fifty-four thousand, three hundred twenty".