82172046 has 32 divisors (see below), whose sum is σ = 179843328. Its totient is φ = 24823040.

The previous prime is 82172023. The next prime is 82172047. The reversal of 82172046 is 64027128.

It is a super-2 number, since 2×82172046² = 13504490287652232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82172047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21535 + ... + 25061.

It is an arithmetic number, because the mean of its divisors is an integer number (5620104).

Almost surely, 2^82172046 is an apocalyptic number.

82172046 is an abundant number, since it is smaller than the sum of its proper divisors (97671282).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

82172046 is a wasteful number, since it uses less digits than its factorization.

82172046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3896.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 82172046 is about 9064.8798116688. The cubic root of 82172046 is about 434.7517780576.

The spelling of 82172046 in words is "eighty-two million, one hundred seventy-two thousand, forty-six".