1045320 has 64 divisors (see below), whose sum is σ = 3248640. Its totient is φ = 268800.

The previous prime is 1045309. The next prime is 1045321. The reversal of 1045320 is 235401.

1045320 = T₁₂₀ + T₁₂₁ + ... + T₁₉₉.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1045320.

It is not an unprimeable number, because it can be changed into a prime (1045321) 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, 3580 + ... + 3860.

It is an arithmetic number, because the mean of its divisors is an integer number (50760).

2^1045320 is an apocalyptic number.

1045320 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 1045320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1624320).

1045320 is an abundant number, since it is smaller than the sum of its proper divisors (2203320).

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

1045320 is a wasteful number, since it uses less digits than its factorization.

1045320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326 (or 322 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 1045320 is about 1022.4089201489. The cubic root of 1045320 is about 101.4884033116.

The spelling of 1045320 in words is "one million, forty-five thousand, three hundred twenty".