1993456 has 20 divisors (see below), whose sum is σ = 4030992. Its totient is φ = 953216.

The previous prime is 1993441. The next prime is 1993457. The reversal of 1993456 is 6543991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1993457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2341 + ... + 3076.

2^1993456 is an apocalyptic number.

1993456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1993456 is an abundant number, since it is smaller than the sum of its proper divisors (2037536).

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

1993456 is a wasteful number, since it uses less digits than its factorization.

1993456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5448 (or 5442 counting only the distinct ones).

The product of its digits is 29160, while the sum is 37.

The square root of 1993456 is about 1411.8980133140. The cubic root of 1993456 is about 125.8545394529.

It can be divided in two parts, 199 and 3456, that added together give a triangular number (3655 = T₈₅).

The spelling of 1993456 in words is "one million, nine hundred ninety-three thousand, four hundred fifty-six".