1601880 has 64 divisors (see below), whose sum is σ = 5495040. Its totient is φ = 365952.

The previous prime is 1601869. The next prime is 1601953. The reversal of 1601880 is 881061.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a zygodrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 1601880.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114 + ... + 1793.

It is an arithmetic number, because the mean of its divisors is an integer number (85860).

2^1601880 is an apocalyptic number.

1601880 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 1601880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2747520).

1601880 is an abundant number, since it is smaller than the sum of its proper divisors (3893160).

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

1601880 is a wasteful number, since it uses less digits than its factorization.

1601880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1928 (or 1924 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 24.

The square root of 1601880 is about 1265.6539811497. The cubic root of 1601880 is about 117.0065012094.

The spelling of 1601880 in words is "one million, six hundred one thousand, eight hundred eighty".