2478494 has 4 divisors (see below), whose sum is σ = 3717744. Its totient is φ = 1239246.

The previous prime is 2478479. The next prime is 2478517. The reversal of 2478494 is 4948742.

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

It is a super-3 number, since 3×2478494³ = 45675664090716533352, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a d-powerful number, because it can be written as 2²¹ + 4 + 7⁶ + 8³ + 4⁵ + 9 + 4⁹ .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 619622 + ... + 619625.

It is an arithmetic number, because the mean of its divisors is an integer number (929436).

2^2478494 is an apocalyptic number.

2478494 is a deficient number, since it is larger than the sum of its proper divisors (1239250).

2478494 is a wasteful number, since it uses less digits than its factorization.

2478494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1239249.

The product of its digits is 64512, while the sum is 38.

The square root of 2478494 is about 1574.3233467112. The cubic root of 2478494 is about 135.3305844174.

The spelling of 2478494 in words is "two million, four hundred seventy-eight thousand, four hundred ninety-four".