2581430 has 8 divisors (see below), whose sum is σ = 4646592. Its totient is φ = 1032568.

The previous prime is 2581429. The next prime is 2581441. The reversal of 2581430 is 341852.

It is a sphenic number, since it is the product of 3 distinct primes.

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 = 2581396 and 2581405.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129062 + ... + 129081.

It is an arithmetic number, because the mean of its divisors is an integer number (580824).

2^2581430 is an apocalyptic number.

2581430 is a deficient number, since it is larger than the sum of its proper divisors (2065162).

2581430 is a wasteful number, since it uses less digits than its factorization.

2581430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258150.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 2581430 is about 1606.6829183134. The cubic root of 2581430 is about 137.1787320375.

The spelling of 2581430 in words is "two million, five hundred eighty-one thousand, four hundred thirty".