2478867 has 4 divisors (see below), whose sum is σ = 3305160. Its totient is φ = 1652576.

The previous prime is 2478809. The next prime is 2478877. The reversal of 2478867 is 7688742.

2478867 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2478867 - 2⁶ = 2478803 is a prime.

It is a super-2 number, since 2×2478867² = 12289563207378, which contains 22 as substring.

It is an Ulam number.

It is a D-number.

2478867 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2478877) 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, 413142 + ... + 413147.

It is an arithmetic number, because the mean of its divisors is an integer number (826290).

2^2478867 is an apocalyptic number.

2478867 is a deficient number, since it is larger than the sum of its proper divisors (826293).

2478867 is an equidigital number, since it uses as much as digits as its factorization.

2478867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 826292.

The product of its digits is 150528, while the sum is 42.

The square root of 2478867 is about 1574.4418058474. The cubic root of 2478867 is about 135.3373729182.

The spelling of 2478867 in words is "two million, four hundred seventy-eight thousand, eight hundred sixty-seven".