82644434 has 4 divisors (see below), whose sum is σ = 123966654. Its totient is φ = 41322216.

The previous prime is 82644407. The next prime is 82644467. The reversal of 82644434 is 43444628.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 80550625 + 2093809 = 8975^2 + 1447^2 .

It is a junction number, because it is equal to n+sod(n) for n = 82644394 and 82644403.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20661107 + ... + 20661110.

Almost surely, 2^82644434 is an apocalyptic number.

82644434 is a deficient number, since it is larger than the sum of its proper divisors (41322220).

82644434 is a wasteful number, since it uses less digits than its factorization.

82644434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41322219.

The product of its digits is 73728, while the sum is 35.

The square root of 82644434 is about 9090.8984154483. The cubic root of 82644434 is about 435.5832823652.

The spelling of 82644434 in words is "eighty-two million, six hundred forty-four thousand, four hundred thirty-four".