4890636 has 18 divisors (see below), whose sum is σ = 12362532. Its totient is φ = 1630200.

The previous prime is 4890631. The next prime is 4890637. The reversal of 4890636 is 6360984.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 135851 = 4890636 / (4 + 8 + 9 + 0 + 6 + 3 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 4890636.

It is not an unprimeable number, because it can be changed into a prime (4890631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 67890 + ... + 67961.

Almost surely, 2^4890636 is an apocalyptic number.

It is an amenable number.

4890636 is an abundant number, since it is smaller than the sum of its proper divisors (7471896).

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

4890636 is a wasteful number, since it uses less digits than its factorization.

4890636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135861 (or 135856 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 4890636 is about 2211.4782386449. The cubic root of 4890636 is about 169.7416606718.

The spelling of 4890636 in words is "four million, eight hundred ninety thousand, six hundred thirty-six".