4821390 has 64 divisors (see below), whose sum is σ = 14699520. Its totient is φ = 1101600.

The previous prime is 4821389. The next prime is 4821407. The reversal of 4821390 is 931284.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 615 + ... + 3165.

It is an arithmetic number, because the mean of its divisors is an integer number (229680).

Almost surely, 2^4821390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4821390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7349760).

4821390 is an abundant number, since it is smaller than the sum of its proper divisors (9878130).

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

4821390 is a wasteful number, since it uses less digits than its factorization.

4821390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2574 (or 2568 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 4821390 is about 2195.7663810160. The cubic root of 4821390 is about 168.9367315662.

The spelling of 4821390 in words is "four million, eight hundred twenty-one thousand, three hundred ninety".