82813570 has 32 divisors (see below), whose sum is σ = 177769728. Its totient is φ = 27158208.

The previous prime is 82813553. The next prime is 82813583. The reversal of 82813570 is 7531828.

It is a super-2 number, since 2×82813570² = 13716174752289800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24109 + ... + 27328.

It is an arithmetic number, because the mean of its divisors is an integer number (5555304).

Almost surely, 2^82813570 is an apocalyptic number.

82813570 is an abundant number, since it is smaller than the sum of its proper divisors (94956158).

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

82813570 is a wasteful number, since it uses less digits than its factorization.

82813570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51474.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 82813570 is about 9100.1961517321. The cubic root of 82813570 is about 435.8802276006.

The spelling of 82813570 in words is "eighty-two million, eight hundred thirteen thousand, five hundred seventy".