2478746 has 8 divisors (see below), whose sum is σ = 3846420. Its totient is φ = 1196608.

The previous prime is 2478743. The next prime is 2478761. The reversal of 2478746 is 6478742.

2478746 = T₁₄₆ + T₁₄₇ + ... + T₂₆₁.

2478746 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2436721 + 42025 = 1561^2 + 205^2 .

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

It is a super-2 number, since 2×2478746² = 12288363465032, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2²¹ + 4⁵ + 7² + 8³ + 7⁶ + 4⁹ + 6³ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2478743) 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, 21311 + ... + 21426.

2^2478746 is an apocalyptic number.

2478746 is a deficient number, since it is larger than the sum of its proper divisors (1367674).

2478746 is a wasteful number, since it uses less digits than its factorization.

2478746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42768.

The product of its digits is 75264, while the sum is 38.

The square root of 2478746 is about 1574.4033790614. The cubic root of 2478746 is about 135.3351708250.

The spelling of 2478746 in words is "two million, four hundred seventy-eight thousand, seven hundred forty-six".