82451972 has 24 divisors (see below), whose sum is σ = 153062784. Its totient is φ = 38728832.

The previous prime is 82451939. The next prime is 82451977. The reversal of 82451972 is 27915428.

It is not an unprimeable number, because it can be changed into a prime (82451977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59633 + ... + 60999.

It is an arithmetic number, because the mean of its divisors is an integer number (6377616).

Almost surely, 2^82451972 is an apocalyptic number.

It is an amenable number.

82451972 is a deficient number, since it is larger than the sum of its proper divisors (70610812).

82451972 is a wasteful number, since it uses less digits than its factorization.

82451972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2275 (or 2273 counting only the distinct ones).

The product of its digits is 40320, while the sum is 38.

The square root of 82451972 is about 9080.3068230099. The cubic root of 82451972 is about 435.2448913941.

The spelling of 82451972 in words is "eighty-two million, four hundred fifty-one thousand, nine hundred seventy-two".