2478831 has 8 divisors (see below), whose sum is σ = 3312384. Its totient is φ = 1648920.

The previous prime is 2478809. The next prime is 2478877. The reversal of 2478831 is 1388742.

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

It is not a de Polignac number, because 2478831 - 2⁷ = 2478703 is a prime.

It is a super-2 number, since 2×2478831² = 12289206253122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2478792 and 2478801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2478331) 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, 2266 + ... + 3176.

It is an arithmetic number, because the mean of its divisors is an integer number (414048).

2^2478831 is an apocalyptic number.

2478831 is a deficient number, since it is larger than the sum of its proper divisors (833553).

2478831 is an equidigital number, since it uses as much as digits as its factorization.

2478831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1821.

The product of its digits is 10752, while the sum is 33.

The square root of 2478831 is about 1574.4303731826. The cubic root of 2478831 is about 135.3367177575.

The spelling of 2478831 in words is "two million, four hundred seventy-eight thousand, eight hundred thirty-one".