2398731 has 8 divisors (see below), whose sum is σ = 3366720. Its totient is φ = 1514952.

The previous prime is 2398699. The next prime is 2398777. The reversal of 2398731 is 1378932.

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

It is not a de Polignac number, because 2398731 - 2⁵ = 2398699 is a prime.

It is a super-2 number, since 2×2398731² = 11507820820722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2398692 and 2398701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2398931) 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, 20985 + ... + 21098.

It is an arithmetic number, because the mean of its divisors is an integer number (420840).

2^2398731 is an apocalyptic number.

2398731 is a deficient number, since it is larger than the sum of its proper divisors (967989).

2398731 is a wasteful number, since it uses less digits than its factorization.

2398731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42105.

The product of its digits is 9072, while the sum is 33.

The square root of 2398731 is about 1548.7837163400. The cubic root of 2398731 is about 133.8629883447.

The spelling of 2398731 in words is "two million, three hundred ninety-eight thousand, seven hundred thirty-one".