82750578 has 16 divisors (see below), whose sum is σ = 166967136. Its totient is φ = 27339200.

The previous prime is 82750541. The next prime is 82750579. The reversal of 82750578 is 87505728.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (82750579) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60348 + ... + 61703.

It is an arithmetic number, because the mean of its divisors is an integer number (10435446).

Almost surely, 2^82750578 is an apocalyptic number.

82750578 is an abundant number, since it is smaller than the sum of its proper divisors (84216558).

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

82750578 is a wasteful number, since it uses less digits than its factorization.

82750578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122169.

The product of its (nonzero) digits is 156800, while the sum is 42.

The square root of 82750578 is about 9096.7344690279. The cubic root of 82750578 is about 435.7696823847.

The spelling of 82750578 in words is "eighty-two million, seven hundred fifty thousand, five hundred seventy-eight".