1863828 has 36 divisors (see below), whose sum is σ = 4918368. Its totient is φ = 594000.

The previous prime is 1863811. The next prime is 1863839. The reversal of 1863828 is 8283681.

1863828 is a `hidden beast` number, since 18 + 638 + 2 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1863792 and 1863801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 298 + ... + 1953.

2^1863828 is an apocalyptic number.

1863828 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1863828 is an abundant number, since it is smaller than the sum of its proper divisors (3054540).

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

1863828 is a wasteful number, since it uses less digits than its factorization.

1863828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2284 (or 2279 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 1863828 is about 1365.2208612529. The cubic root of 1863828 is about 123.0652043730.

It can be divided in two parts, 1863 and 828, that multiplied together give a square (1542564 = 1242²).

The spelling of 1863828 in words is "one million, eight hundred sixty-three thousand, eight hundred twenty-eight".