1601320 has 96 divisors (see below), whose sum is σ = 4514400. Its totient is φ = 508032.

The previous prime is 1601317. The next prime is 1601359. The reversal of 1601320 is 231061.

1601320 is a modest number, since divided by 1320 gives 160 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 1601320.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37219 + ... + 37261.

It is an arithmetic number, because the mean of its divisors is an integer number (47025).

2^1601320 is an apocalyptic number.

1601320 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 1601320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2257200).

1601320 is an abundant number, since it is smaller than the sum of its proper divisors (2913080).

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

1601320 is a wasteful number, since it uses less digits than its factorization.

1601320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87 (or 76 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1601320 is about 1265.4327323094. The cubic root of 1601320 is about 116.9928648825.

Adding to 1601320 its reverse (231061), we get a palindrome (1832381).

The spelling of 1601320 in words is "one million, six hundred one thousand, three hundred twenty".