2478345 has 16 divisors (see below), whose sum is σ = 4199040. Its totient is φ = 1243904.

The previous prime is 2478337. The next prime is 2478347. The reversal of 2478345 is 5438742.

It is a cyclic number.

It is not a de Polignac number, because 2478345 - 2³ = 2478337 is a prime.

It is a super-2 number, since 2×2478345² = 12284387878050, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2²¹ + 4⁵ + 7⁶ + 8 + 3⁵ + 4⁹ + 5³ .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2478347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4605 + ... + 5114.

It is an arithmetic number, because the mean of its divisors is an integer number (262440).

2^2478345 is an apocalyptic number.

It is an amenable number.

2478345 is a deficient number, since it is larger than the sum of its proper divisors (1720695).

2478345 is a wasteful number, since it uses less digits than its factorization.

2478345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9744.

The product of its digits is 26880, while the sum is 33.

The square root of 2478345 is about 1574.2760240822. The cubic root of 2478345 is about 135.3278724666.

The spelling of 2478345 in words is "two million, four hundred seventy-eight thousand, three hundred forty-five".