82817380 has 12 divisors (see below), whose sum is σ = 173916540. Its totient is φ = 33126944.

The previous prime is 82817363. The next prime is 82817401. The reversal of 82817380 is 8371828.

It can be written as a sum of positive squares in 2 ways, for example, as 15872256 + 66945124 = 3984^2 + 8182^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2070415 + ... + 2070454.

It is an arithmetic number, because the mean of its divisors is an integer number (14493045).

Almost surely, 2^82817380 is an apocalyptic number.

It is an amenable number.

82817380 is an abundant number, since it is smaller than the sum of its proper divisors (91099160).

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

82817380 is a wasteful number, since it uses less digits than its factorization.

82817380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4140878 (or 4140876 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 37.

The square root of 82817380 is about 9100.4054854715. The cubic root of 82817380 is about 435.8869120051.

The spelling of 82817380 in words is "eighty-two million, eight hundred seventeen thousand, three hundred eighty".