2403400 has 48 divisors (see below), whose sum is σ = 5708340. Its totient is φ = 940800.

The previous prime is 2403389. The next prime is 2403403. The reversal of 2403400 is 43042.

It can be written as a sum of positive squares in 6 ways, for example, as 910116 + 1493284 = 954^2 + 1222^2 .

It is not an unprimeable number, because it can be changed into a prime (2403403) 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, 12102 + ... + 12298.

2^2403400 is an apocalyptic number.

2403400 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 2403400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2854170).

2403400 is an abundant number, since it is smaller than the sum of its proper divisors (3304940).

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

2403400 is a wasteful number, since it uses less digits than its factorization.

2403400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274 (or 265 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 2403400 is about 1550.2902953963. The cubic root of 2403400 is about 133.9497844071.

Adding to 2403400 its reverse (43042), we get a palindrome (2446442).

The spelling of 2403400 in words is "two million, four hundred three thousand, four hundred".