2578432 has 24 divisors (see below), whose sum is σ = 5159700. Its totient is φ = 1288192.

The previous prime is 2578423. The next prime is 2578451. The reversal of 2578432 is 2348752.

It is a junction number, because it is equal to n+sod(n) for n = 2578394 and 2578403.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1419 + ... + 2677.

2^2578432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2578432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2579850).

2578432 is an abundant number, since it is smaller than the sum of its proper divisors (2581268).

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

2578432 is an equidigital number, since it uses as much as digits as its factorization.

2578432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1281 (or 1261 counting only the distinct ones).

The product of its digits is 13440, while the sum is 31.

The square root of 2578432 is about 1605.7496691577. The cubic root of 2578432 is about 137.1256062958.

The spelling of 2578432 in words is "two million, five hundred seventy-eight thousand, four hundred thirty-two".