1993628 has 24 divisors (see below), whose sum is σ = 4294752. Its totient is φ = 788544.

The previous prime is 1993627. The next prime is 1993631. The reversal of 1993628 is 8263991.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1993591 and 1993600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1993627) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2375 + ... + 3102.

It is an arithmetic number, because the mean of its divisors is an integer number (178948).

2^1993628 is an apocalyptic number.

It is an amenable number.

1993628 is an abundant number, since it is smaller than the sum of its proper divisors (2301124).

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

1993628 is a wasteful number, since it uses less digits than its factorization.

1993628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5501 (or 5499 counting only the distinct ones).

The product of its digits is 23328, while the sum is 38.

The square root of 1993628 is about 1411.9589229153. The cubic root of 1993628 is about 125.8581590225.

The spelling of 1993628 in words is "one million, nine hundred ninety-three thousand, six hundred twenty-eight".