82919810 has 8 divisors (see below), whose sum is σ = 149255676. Its totient is φ = 33167920.

The previous prime is 82919791. The next prime is 82919813. The reversal of 82919810 is 1891928.

It can be written as a sum of positive squares in 2 ways, for example, as 82646281 + 273529 = 9091^2 + 523^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×82919810² = 13751389780872200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (82919813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4145981 + ... + 4146000.

Almost surely, 2^82919810 is an apocalyptic number.

82919810 is a deficient number, since it is larger than the sum of its proper divisors (66335866).

82919810 is a wasteful number, since it uses less digits than its factorization.

82919810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8291988.

The product of its (nonzero) digits is 10368, while the sum is 38.

The square root of 82919810 is about 9106.0315176261. The cubic root of 82919810 is about 436.0665421823.

The spelling of 82919810 in words is "eighty-two million, nine hundred nineteen thousand, eight hundred ten".