1992428 has 12 divisors (see below), whose sum is σ = 3511200. Its totient is φ = 989232.

The previous prime is 1992409. The next prime is 1992433. The reversal of 1992428 is 8242991.

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 in 3 ways as a sum of consecutive naturals, for example, 1076 + ... + 2267.

It is an arithmetic number, because the mean of its divisors is an integer number (292600).

2^1992428 is an apocalyptic number.

It is an amenable number.

1992428 is a deficient number, since it is larger than the sum of its proper divisors (1518772).

1992428 is a wasteful number, since it uses less digits than its factorization.

1992428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3496 (or 3494 counting only the distinct ones).

The product of its digits is 10368, while the sum is 35.

The square root of 1992428 is about 1411.5339174104. The cubic root of 1992428 is about 125.8329018693.

The spelling of 1992428 in words is "one million, nine hundred ninety-two thousand, four hundred twenty-eight".