3820020 has 24 divisors (see below), whose sum is σ = 10696224. Its totient is φ = 1018656.

The previous prime is 3820009. The next prime is 3820031. The reversal of 3820020 is 200283.

It is an interprime number because it is at equal distance from previous prime (3820009) and next prime (3820031).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

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, 31774 + ... + 31893.

It is an arithmetic number, because the mean of its divisors is an integer number (445676).

Almost surely, 2^3820020 is an apocalyptic number.

3820020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3820020 is an abundant number, since it is smaller than the sum of its proper divisors (6876204).

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

3820020 is a wasteful number, since it uses less digits than its factorization.

3820020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63679 (or 63677 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 3820020 is about 1954.4871450076. The cubic root of 3820020 is about 156.3226392920.

The spelling of 3820020 in words is "three million, eight hundred twenty thousand, twenty".