1897928 has 16 divisors (see below), whose sum is σ = 3587760. Its totient is φ = 941200.

The previous prime is 1897871. The next prime is 1897939. The reversal of 1897928 is 8297981.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143 + ... + 1953.

It is an arithmetic number, because the mean of its divisors is an integer number (224235).

2^1897928 is an apocalyptic number.

It is an amenable number.

1897928 is a deficient number, since it is larger than the sum of its proper divisors (1689832).

1897928 is a wasteful number, since it uses less digits than its factorization.

1897928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1948 (or 1944 counting only the distinct ones).

The product of its digits is 72576, while the sum is 44.

The square root of 1897928 is about 1377.6530767940. The cubic root of 1897928 is about 123.8111937598.

The spelling of 1897928 in words is "one million, eight hundred ninety-seven thousand, nine hundred twenty-eight".