2731398 has 8 divisors (see below), whose sum is σ = 5462808. Its totient is φ = 910464.

The previous prime is 2731381. The next prime is 2731427. The reversal of 2731398 is 8931372.

2731398 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

2731398 is an admirable number.

It is a congruent number.

It is an unprimeable number.

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, 227611 + ... + 227622.

It is an arithmetic number, because the mean of its divisors is an integer number (682851).

2^2731398 is an apocalyptic number.

2731398 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2731398 is a wasteful number, since it uses less digits than its factorization.

2731398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455238.

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

The square root of 2731398 is about 1652.6941640848. The cubic root of 2731398 is about 139.7853513400.

The spelling of 2731398 in words is "two million, seven hundred thirty-one thousand, three hundred ninety-eight".