1993836 has 24 divisors (see below), whose sum is σ = 5010544. Its totient is φ = 613440.

The previous prime is 1993829. The next prime is 1993861. The reversal of 1993836 is 6383991.

1993836 = T₁₂₃ + T₁₂₄ + ... + T₂₃₉.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 1993794 and 1993803.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6235 + ... + 6546.

2^1993836 is an apocalyptic number.

It is an amenable number.

1993836 is an abundant number, since it is smaller than the sum of its proper divisors (3016708).

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

1993836 is a wasteful number, since it uses less digits than its factorization.

1993836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12801 (or 12799 counting only the distinct ones).

The product of its digits is 34992, while the sum is 39.

The square root of 1993836 is about 1412.0325775279. The cubic root of 1993836 is about 125.8625358983.

The spelling of 1993836 in words is "one million, nine hundred ninety-three thousand, eight hundred thirty-six".