2478858 has 8 divisors (see below), whose sum is σ = 4957728. Its totient is φ = 826284.

The previous prime is 2478809. The next prime is 2478877. The reversal of 2478858 is 8588742.

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

2478858 is an admirable number.

It is a super-2 number, since 2×2478858² = 12289473968328, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2¹⁰ + 4⁴ + 7⁶ + 8 + 8⁶ + 5⁴ + 8⁷ .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206566 + ... + 206577.

It is an arithmetic number, because the mean of its divisors is an integer number (619716).

2^2478858 is an apocalyptic number.

2478858 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2478858 is a wasteful number, since it uses less digits than its factorization.

2478858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413148.

The product of its digits is 143360, while the sum is 42.

The square root of 2478858 is about 1574.4389476890. The cubic root of 2478858 is about 135.3372091286.

The spelling of 2478858 in words is "two million, four hundred seventy-eight thousand, eight hundred fifty-eight".