1423580 has 48 divisors (see below), whose sum is σ = 3265920. Its totient is φ = 519168.

The previous prime is 1423579. The next prime is 1423589. The reversal of 1423580 is 853241.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423589) 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, 17981 + ... + 18059.

It is an arithmetic number, because the mean of its divisors is an integer number (68040).

2^1423580 is an apocalyptic number.

1423580 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 1423580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1632960).

1423580 is an abundant number, since it is smaller than the sum of its proper divisors (1842340).

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

1423580 is a wasteful number, since it uses less digits than its factorization.

1423580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158 (or 156 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 1423580 is about 1193.1387178363. The cubic root of 1423580 is about 112.4934646409.

The spelling of 1423580 in words is "one million, four hundred twenty-three thousand, five hundred eighty".