1897380 has 72 divisors (see below), whose sum is σ = 5870592. Its totient is φ = 495936.

The previous prime is 1897367. The next prime is 1897403. The reversal of 1897380 is 837981.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 14877 + ... + 15003.

It is an arithmetic number, because the mean of its divisors is an integer number (81536).

2^1897380 is an apocalyptic number.

1897380 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 1897380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2935296).

1897380 is an abundant number, since it is smaller than the sum of its proper divisors (3973212).

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

1897380 is a wasteful number, since it uses less digits than its factorization.

1897380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225 (or 220 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 1897380 is about 1377.4541734664. The cubic root of 1897380 is about 123.7992763661.

It can be divided in two parts, 189 and 7380, that added together give a square (7569 = 87²).

The spelling of 1897380 in words is "one million, eight hundred ninety-seven thousand, three hundred eighty".