82172410 has 8 divisors (see below), whose sum is σ = 147910356. Its totient is φ = 32868960.

The previous prime is 82172393. The next prime is 82172417. The reversal of 82172410 is 1427128.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 82065481 + 106929 = 9059^2 + 327^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (82172417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4108611 + ... + 4108630.

Almost surely, 2^82172410 is an apocalyptic number.

82172410 is a deficient number, since it is larger than the sum of its proper divisors (65737946).

82172410 is a wasteful number, since it uses less digits than its factorization.

82172410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8217248.

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 82172410 is about 9064.8998891328. The cubic root of 82172410 is about 434.7524200010.

Adding to 82172410 its reverse (1427128), we get a palindrome (83599538).

The spelling of 82172410 in words is "eighty-two million, one hundred seventy-two thousand, four hundred ten".