2505428 has 12 divisors (see below), whose sum is σ = 4491732. Its totient is φ = 1222080.

The previous prime is 2505421. The next prime is 2505457. The reversal of 2505428 is 8245052.

2505428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 158404 + 2347024 = 398^2 + 1532^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2505397 and 2505406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2505421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7475 + ... + 7802.

It is an arithmetic number, because the mean of its divisors is an integer number (374311).

2^2505428 is an apocalyptic number.

It is an amenable number.

2505428 is a deficient number, since it is larger than the sum of its proper divisors (1986304).

2505428 is a wasteful number, since it uses less digits than its factorization.

2505428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15322 (or 15320 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 2505428 is about 1582.8543837005. The cubic root of 2505428 is about 135.8190355516.

The spelling of 2505428 in words is "two million, five hundred five thousand, four hundred twenty-eight".