3638250 has 192 divisors, whose sum is σ = 12804480. Its totient is φ = 756000.

The previous prime is 3638249. The next prime is 3638251. The reversal of 3638250 is 528363.

3638250 is a `hidden beast` number, since 3 + 638 + 25 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (3638249) and next prime (3638251).

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 (3638251) 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 95 ways as a sum of consecutive naturals, for example, 330745 + ... + 330755.

It is an arithmetic number, because the mean of its divisors is an integer number (66690).

Almost surely, 2^3638250 is an apocalyptic number.

3638250 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3638250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6402240).

3638250 is an abundant number, since it is smaller than the sum of its proper divisors (9166230).

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

3638250 is a wasteful number, since it uses less digits than its factorization.

3638250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51 (or 28 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 3638250 is about 1907.4197230814. The cubic root of 3638250 is about 153.8027778356.

The spelling of 3638250 in words is "three million, six hundred thirty-eight thousand, two hundred fifty".