82643450 has 12 divisors (see below), whose sum is σ = 153716910. Its totient is φ = 33057360.

The previous prime is 82643441. The next prime is 82643461. The reversal of 82643450 is 5434628.

It can be written as a sum of positive squares in 3 ways, for example, as 35844169 + 46799281 = 5987^2 + 6841^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 826385 + ... + 826484.

Almost surely, 2^82643450 is an apocalyptic number.

82643450 is a deficient number, since it is larger than the sum of its proper divisors (71073460).

82643450 is a wasteful number, since it uses less digits than its factorization.

82643450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1652881 (or 1652876 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 82643450 is about 9090.8442952236. The cubic root of 82643450 is about 435.5815536113.

The spelling of 82643450 in words is "eighty-two million, six hundred forty-three thousand, four hundred fifty".