2398656 has 84 divisors (see below), whose sum is σ = 7062216. Its totient is φ = 714240.

The previous prime is 2398637. The next prime is 2398657. The reversal of 2398656 is 6568932.

It is a Harshad number since it is a multiple of its sum of digits (39).

Its product of digits (77760) is a multiple of the sum of its prime factors (90).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2398657) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77361 + ... + 77391.

It is an arithmetic number, because the mean of its divisors is an integer number (84074).

2^2398656 is an apocalyptic number.

2398656 is a gapful number since it is divisible by the number (26) 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 2398656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3531108).

2398656 is an abundant number, since it is smaller than the sum of its proper divisors (4663560).

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

2398656 is a wasteful number, since it uses less digits than its factorization.

2398656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90 (or 49 counting only the distinct ones).

The product of its digits is 77760, while the sum is 39.

The square root of 2398656 is about 1548.7595036028. The cubic root of 2398656 is about 133.8615931863.

Multiplying 2398656 by its sum of digits (39), we get a square (93547584 = 9672²).

2398656 divided by its sum of digits (39) gives a square (61504 = 248²).

It can be divided in two parts, 23986 and 56, that added together give a palindrome (24042).

The spelling of 2398656 in words is "two million, three hundred ninety-eight thousand, six hundred fifty-six".