3898020 has 48 divisors (see below), whose sum is σ = 12475008. Its totient is φ = 890880.

The previous prime is 3898019. The next prime is 3898031. The reversal of 3898020 is 208983.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4221 + ... + 5060.

It is an arithmetic number, because the mean of its divisors is an integer number (259896).

Almost surely, 2^3898020 is an apocalyptic number.

3898020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3898020 is an abundant number, since it is smaller than the sum of its proper divisors (8576988).

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

3898020 is a wasteful number, since it uses less digits than its factorization.

3898020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9300 (or 9298 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 3898020 is about 1974.3403961830. The cubic root of 3898020 is about 157.3794491999.

The spelling of 3898020 in words is "three million, eight hundred ninety-eight thousand, twenty".