2543430 has 32 divisors (see below), whose sum is σ = 6156000. Its totient is φ = 672512.

The previous prime is 2543423. The next prime is 2543441. The reversal of 2543430 is 343452.

It is a happy number.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 2543397 and 2543406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4186 + ... + 4754.

It is an arithmetic number, because the mean of its divisors is an integer number (192375).

2^2543430 is an apocalyptic number.

2543430 is an abundant number, since it is smaller than the sum of its proper divisors (3612570).

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

2543430 is a wasteful number, since it uses less digits than its factorization.

2543430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728.

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 2543430 is about 1594.8134687166. The cubic root of 2543430 is about 136.5022876617.

Adding to 2543430 its reverse (343452), we get a palindrome (2886882).

The spelling of 2543430 in words is "two million, five hundred forty-three thousand, four hundred thirty".