2393820 has 192 divisors, whose sum is σ = 9031680. Its totient is φ = 518400.

The previous prime is 2393819. The next prime is 2393837. The reversal of 2393820 is 283932.

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 63 ways as a sum of consecutive naturals, for example, 77205 + ... + 77235.

It is an arithmetic number, because the mean of its divisors is an integer number (47040).

2^2393820 is an apocalyptic number.

2393820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2393820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4515840).

2393820 is an abundant number, since it is smaller than the sum of its proper divisors (6637860).

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

2393820 is a wasteful number, since it uses less digits than its factorization.

2393820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73 (or 65 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 2393820 is about 1547.1974663888. The cubic root of 2393820 is about 133.7715719129.

The spelling of 2393820 in words is "two million, three hundred ninety-three thousand, eight hundred twenty".