1897340 has 24 divisors (see below), whose sum is σ = 4194960. Its totient is φ = 718848.

The previous prime is 1897327. The next prime is 1897361. The reversal of 1897340 is 437981.

It is a junction number, because it is equal to n+sod(n) for n = 1897297 and 1897306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2117 + ... + 2876.

It is an arithmetic number, because the mean of its divisors is an integer number (174790).

2^1897340 is an apocalyptic number.

1897340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1897340 is an abundant number, since it is smaller than the sum of its proper divisors (2297620).

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

1897340 is a wasteful number, since it uses less digits than its factorization.

1897340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5021 (or 5019 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 1897340 is about 1377.4396538506. The cubic root of 1897340 is about 123.7984063935.

The spelling of 1897340 in words is "one million, eight hundred ninety-seven thousand, three hundred forty".