4949820 has 72 divisors (see below), whose sum is σ = 15213744. Its totient is φ = 1302528.

The previous prime is 4949797. The next prime is 4949827. The reversal of 4949820 is 289494.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4949827) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19132 + ... + 19388.

It is an arithmetic number, because the mean of its divisors is an integer number (211302).

Almost surely, 2^4949820 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4949820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7606872).

4949820 is an abundant number, since it is smaller than the sum of its proper divisors (10263924).

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

4949820 is a wasteful number, since it uses less digits than its factorization.

4949820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379 (or 374 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 4949820 is about 2224.8190937692. The cubic root of 4949820 is about 170.4236262949.

The spelling of 4949820 in words is "four million, nine hundred forty-nine thousand, eight hundred twenty".