75810138 has 16 divisors (see below), whose sum is σ = 153540480. Its totient is φ = 24950016.

The previous prime is 75810127. The next prime is 75810143. The reversal of 75810138 is 83101857.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 75810099 and 75810108.

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 7 ways as a sum of consecutive naturals, for example, 79495 + ... + 80442.

It is an arithmetic number, because the mean of its divisors is an integer number (9596280).

Almost surely, 2^75810138 is an apocalyptic number.

75810138 is an abundant number, since it is smaller than the sum of its proper divisors (77730342).

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

75810138 is a wasteful number, since it uses less digits than its factorization.

75810138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160021.

The product of its (nonzero) digits is 6720, while the sum is 33.

The square root of 75810138 is about 8706.9017451675. The cubic root of 75810138 is about 423.2293353700.

The spelling of 75810138 in words is "seventy-five million, eight hundred ten thousand, one hundred thirty-eight".