3625820 has 24 divisors (see below), whose sum is σ = 8306928. Its totient is φ = 1318400.

The previous prime is 3625813. The next prime is 3625829. The reversal of 3625820 is 285263.

It is a self number, because there is not a number n which added to its sum of digits gives 3625820.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3625829) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 8021 + ... + 8460.

It is an arithmetic number, because the mean of its divisors is an integer number (346122).

Almost surely, 2^3625820 is an apocalyptic number.

It is an amenable number.

3625820 is an abundant number, since it is smaller than the sum of its proper divisors (4681108).

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

3625820 is a wasteful number, since it uses less digits than its factorization.

3625820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16501 (or 16499 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 3625820 is about 1904.1586068393. The cubic root of 3625820 is about 153.6274233986.

The spelling of 3625820 in words is "three million, six hundred twenty-five thousand, eight hundred twenty".