2456638 has 8 divisors (see below), whose sum is σ = 3774960. Its totient is φ = 1198320.

The previous prime is 2456627. The next prime is 2456639. The reversal of 2456638 is 8366542.

It is a happy number.

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

It is a d-powerful number, because it can be written as 2⁵ + 4² + 5⁷ + 6⁴ + 6⁷ + 3⁴ + 8⁷ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2456639) by changing a digit.

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, 14898 + ... + 15061.

It is an arithmetic number, because the mean of its divisors is an integer number (471870).

2^2456638 is an apocalyptic number.

2456638 is a deficient number, since it is larger than the sum of its proper divisors (1318322).

2456638 is a wasteful number, since it uses less digits than its factorization.

2456638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30002.

The product of its digits is 34560, while the sum is 34.

The square root of 2456638 is about 1567.3665812438. The cubic root of 2456638 is about 134.9316160291.

It can be divided in two parts, 2 and 456638, that multiplied together give a triangular number (913276 = T₁₃₅₁).

The spelling of 2456638 in words is "two million, four hundred fifty-six thousand, six hundred thirty-eight".