1045980 has 96 divisors (see below), whose sum is σ = 3528000. Its totient is φ = 255744.

The previous prime is 1045963. The next prime is 1045981. The reversal of 1045980 is 895401.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1045981) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6946 + ... + 7094.

It is an arithmetic number, because the mean of its divisors is an integer number (36750).

2^1045980 is an apocalyptic number.

1045980 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 1045980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1764000).

1045980 is an abundant number, since it is smaller than the sum of its proper divisors (2482020).

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

1045980 is a wasteful number, since it uses less digits than its factorization.

1045980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180 (or 172 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 1045980 is about 1022.7316363543. The cubic root of 1045980 is about 101.5097582568.

It can be divided in two parts, 1045 and 980, that added together give a square (2025 = 45²).

The spelling of 1045980 in words is "one million, forty-five thousand, nine hundred eighty".