9742638 has 16 divisors (see below), whose sum is σ = 19665360. Its totient is φ = 3217536.

The previous prime is 9742633. The next prime is 9742643. The reversal of 9742638 is 8362479.

It is an interprime number because it is at equal distance from previous prime (9742633) and next prime (9742643).

It is a junction number, because it is equal to n+sod(n) for n = 9742596 and 9742605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9742633) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 6795 + ... + 8102.

It is an arithmetic number, because the mean of its divisors is an integer number (1229085).

Almost surely, 2^9742638 is an apocalyptic number.

9742638 is an abundant number, since it is smaller than the sum of its proper divisors (9922722).

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

9742638 is a wasteful number, since it uses less digits than its factorization.

9742638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15011.

The product of its digits is 72576, while the sum is 39.

The square root of 9742638 is about 3121.3199131137. The cubic root of 9742638 is about 213.5791507796.

The spelling of 9742638 in words is "nine million, seven hundred forty-two thousand, six hundred thirty-eight".