2478539 has 8 divisors (see below), whose sum is σ = 2873088. Its totient is φ = 2094120.

The previous prime is 2478529. The next prime is 2478547. The reversal of 2478539 is 9358742.

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

It is not a de Polignac number, because 2478539 - 2⁴ = 2478523 is a prime.

It is a super-2 number, since 2×2478539² = 12286311149042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2478529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1997 + ... + 2990.

It is an arithmetic number, because the mean of its divisors is an integer number (359136).

2^2478539 is an apocalyptic number.

2478539 is a deficient number, since it is larger than the sum of its proper divisors (394549).

2478539 is an equidigital number, since it uses as much as digits as its factorization.

2478539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5065.

The product of its digits is 60480, while the sum is 38.

The square root of 2478539 is about 1574.3376385007. The cubic root of 2478539 is about 135.3314034415.

The spelling of 2478539 in words is "two million, four hundred seventy-eight thousand, five hundred thirty-nine".