1928434 has 4 divisors (see below), whose sum is σ = 2892654. Its totient is φ = 964216.

The previous prime is 1928419. The next prime is 1928447. The reversal of 1928434 is 4348291.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4348291 = 1373 ⋅3167.

It can be written as a sum of positive squares in only one way, i.e., 1113025 + 815409 = 1055^2 + 903^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 1928396 and 1928405.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 482107 + ... + 482110.

2^1928434 is an apocalyptic number.

1928434 is a deficient number, since it is larger than the sum of its proper divisors (964220).

1928434 is an equidigital number, since it uses as much as digits as its factorization.

1928434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 964219.

The product of its digits is 6912, while the sum is 31.

The square root of 1928434 is about 1388.6806688364. The cubic root of 1928434 is about 124.4710232935.

The spelling of 1928434 in words is "one million, nine hundred twenty-eight thousand, four hundred thirty-four".