2398738 has 4 divisors (see below), whose sum is σ = 3598110. Its totient is φ = 1199368.

The previous prime is 2398699. The next prime is 2398777. The reversal of 2398738 is 8378932.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2398699) and next prime (2398777).

It can be written as a sum of positive squares in only one way, i.e., 1471369 + 927369 = 1213^2 + 963^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 2398738.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 599683 + ... + 599686.

2^2398738 is an apocalyptic number.

2398738 is a deficient number, since it is larger than the sum of its proper divisors (1199372).

2398738 is a wasteful number, since it uses less digits than its factorization.

2398738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1199371.

The product of its digits is 72576, while the sum is 40.

The square root of 2398738 is about 1548.7859761762. The cubic root of 2398738 is about 133.8631185580.

It can be divided in two parts, 23987 and 38, that added together give a square (24025 = 155²).

The spelling of 2398738 in words is "two million, three hundred ninety-eight thousand, seven hundred thirty-eight".