3783820 has 24 divisors (see below), whose sum is σ = 7986384. Its totient is φ = 1505856.

The previous prime is 3783797. The next prime is 3783821. The reversal of 3783820 is 283873.

It is not an unprimeable number, because it can be changed into a prime (3783821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5199 + ... + 5881.

It is an arithmetic number, because the mean of its divisors is an integer number (332766).

Almost surely, 2^3783820 is an apocalyptic number.

It is an amenable number.

3783820 is an abundant number, since it is smaller than the sum of its proper divisors (4202564).

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

3783820 is a wasteful number, since it uses less digits than its factorization.

3783820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 969 (or 967 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 3783820 is about 1945.2043594440. The cubic root of 3783820 is about 155.8272798002.

The spelling of 3783820 in words is "three million, seven hundred eighty-three thousand, eight hundred twenty".