7256138 has 16 divisors (see below), whose sum is σ = 11517120. Its totient is φ = 3419136.

The previous prime is 7256113. The next prime is 7256141. The reversal of 7256138 is 8316527.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9395 + ... + 10137.

It is an arithmetic number, because the mean of its divisors is an integer number (719820).

Almost surely, 2^7256138 is an apocalyptic number.

7256138 is a deficient number, since it is larger than the sum of its proper divisors (4260982).

7256138 is a wasteful number, since it uses less digits than its factorization.

7256138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1021.

The product of its digits is 10080, while the sum is 32.

The square root of 7256138 is about 2693.7219604109. The cubic root of 7256138 is about 193.5984360288.

The spelling of 7256138 in words is "seven million, two hundred fifty-six thousand, one hundred thirty-eight".