1897960 has 32 divisors (see below), whose sum is σ = 4458240. Its totient is φ = 725824.

The previous prime is 1897957. The next prime is 1897969. The reversal of 1897960 is 697981.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1897969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112 + ... + 1951.

It is an arithmetic number, because the mean of its divisors is an integer number (139320).

2^1897960 is an apocalyptic number.

1897960 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 1897960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2229120).

1897960 is an abundant number, since it is smaller than the sum of its proper divisors (2560280).

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

1897960 is a wasteful number, since it uses less digits than its factorization.

1897960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2097 (or 2093 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 1897960 is about 1377.6646906994. The cubic root of 1897960 is about 123.8118895951.

The spelling of 1897960 in words is "one million, eight hundred ninety-seven thousand, nine hundred sixty".