7638542 has 32 divisors (see below), whose sum is σ = 12856320. Its totient is φ = 3386880.

The previous prime is 7638541. The next prime is 7638557. The reversal of 7638542 is 2458367.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7638541) 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 15 ways as a sum of consecutive naturals, for example, 60083 + ... + 60209.

It is an arithmetic number, because the mean of its divisors is an integer number (401760).

Almost surely, 2^7638542 is an apocalyptic number.

7638542 is a deficient number, since it is larger than the sum of its proper divisors (5217778).

7638542 is a wasteful number, since it uses less digits than its factorization.

7638542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236.

The product of its digits is 40320, while the sum is 35.

The square root of 7638542 is about 2763.7912366892. The cubic root of 7638542 is about 196.9413105597.

The spelling of 7638542 in words is "seven million, six hundred thirty-eight thousand, five hundred forty-two".