2471858 has 4 divisors (see below), whose sum is σ = 3707790. Its totient is φ = 1235928.

The previous prime is 2471827. The next prime is 2471863. The reversal of 2471858 is 8581742.

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

It can be written as a sum of positive squares in only one way, i.e., 2301289 + 170569 = 1517^2 + 413^2 .

It is a super-2 number, since 2×2471858² = 12220163944328, which contains 22 as substring.

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, 617963 + ... + 617966.

2^2471858 is an apocalyptic number.

2471858 is a deficient number, since it is larger than the sum of its proper divisors (1235932).

2471858 is a wasteful number, since it uses less digits than its factorization.

2471858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1235931.

The product of its digits is 17920, while the sum is 35.

The square root of 2471858 is about 1572.2143619749. The cubic root of 2471858 is about 135.2096969691.

The spelling of 2471858 in words is "two million, four hundred seventy-one thousand, eight hundred fifty-eight".