82406644 has 12 divisors (see below), whose sum is σ = 144479104. Its totient is φ = 41126904.

The previous prime is 82406609. The next prime is 82406689. The reversal of 82406644 is 44660428.

It is a happy number.

It is a congruent number.

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, 16644 + ... + 21019.

Almost surely, 2^82406644 is an apocalyptic number.

It is an amenable number.

82406644 is a deficient number, since it is larger than the sum of its proper divisors (62072460).

82406644 is a wasteful number, since it uses less digits than its factorization.

82406644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38214 (or 38212 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 34.

The square root of 82406644 is about 9077.8105289767. The cubic root of 82406644 is about 435.1651180975.

It can be divided in two parts, 8240 and 6644, that added together give a square (14884 = 122²).

The spelling of 82406644 in words is "eighty-two million, four hundred six thousand, six hundred forty-four".