3824820 has 72 divisors (see below), whose sum is σ = 12046944. Its totient is φ = 1018656.

The previous prime is 3824771. The next prime is 3824827. The reversal of 3824820 is 284283.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3824827) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4467 + ... + 5253.

Almost surely, 2^3824820 is an apocalyptic number.

3824820 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3824820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6023472).

3824820 is an abundant number, since it is smaller than the sum of its proper divisors (8222124).

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

3824820 is a wasteful number, since it uses less digits than its factorization.

3824820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 811 (or 797 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 3824820 is about 1955.7147031201. The cubic root of 3824820 is about 156.3880869954.

The spelling of 3824820 in words is "three million, eight hundred twenty-four thousand, eight hundred twenty".