2563828 has 6 divisors (see below), whose sum is σ = 4486706. Its totient is φ = 1281912.

The previous prime is 2563819. The next prime is 2563837. The reversal of 2563828 is 8283652.

It is an interprime number because it is at equal distance from previous prime (2563819) and next prime (2563837).

It can be written as a sum of positive squares in only one way, i.e., 1695204 + 868624 = 1302^2 + 932^2 .

It is an Ulam number.

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 2563793 and 2563802.

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 as a sum of consecutive naturals, namely, 320475 + ... + 320482.

2^2563828 is an apocalyptic number.

It is an amenable number.

2563828 is a deficient number, since it is larger than the sum of its proper divisors (1922878).

2563828 is a wasteful number, since it uses less digits than its factorization.

2563828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640961 (or 640959 counting only the distinct ones).

The product of its digits is 23040, while the sum is 34.

The square root of 2563828 is about 1601.1958031421. The cubic root of 2563828 is about 136.8662270671.

The spelling of 2563828 in words is "two million, five hundred sixty-three thousand, eight hundred twenty-eight".