82641810 has 32 divisors (see below), whose sum is σ = 198614592. Its totient is φ = 22007360.

The previous prime is 82641809. The next prime is 82641827. The reversal of 82641810 is 1814628.

It is a super-2 number, since 2×82641810² = 13659337520152200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27712 + ... + 30548.

It is an arithmetic number, because the mean of its divisors is an integer number (6206706).

Almost surely, 2^82641810 is an apocalyptic number.

82641810 is an abundant number, since it is smaller than the sum of its proper divisors (115972782).

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

82641810 is a wasteful number, since it uses less digits than its factorization.

82641810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3818.

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 82641810 is about 9090.7540941332. The cubic root of 82641810 is about 435.5786723244.

The spelling of 82641810 in words is "eighty-two million, six hundred forty-one thousand, eight hundred ten".