82785022 has 4 divisors (see below), whose sum is σ = 124177536. Its totient is φ = 41392510.

The previous prime is 82785013. The next prime is 82785023. The reversal of 82785022 is 22058728.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82785023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20696254 + ... + 20696257.

It is an arithmetic number, because the mean of its divisors is an integer number (31044384).

Almost surely, 2^82785022 is an apocalyptic number.

82785022 is a deficient number, since it is larger than the sum of its proper divisors (41392514).

82785022 is a wasteful number, since it uses less digits than its factorization.

82785022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41392513.

The product of its (nonzero) digits is 17920, while the sum is 34.

The square root of 82785022 is about 9098.6274789113. The cubic root of 82785022 is about 435.8301354121.

It can be divided in two parts, 827 and 85022, that added together give a square (85849 = 293²).

The spelling of 82785022 in words is "eighty-two million, seven hundred eighty-five thousand, twenty-two".