82349172 has 18 divisors (see below), whose sum is σ = 208160498. Its totient is φ = 27449712.

The previous prime is 82349167. The next prime is 82349219. The reversal of 82349172 is 27194328.

It can be written as a sum of positive squares in only one way, i.e., 82192356 + 156816 = 9066^2 + 396^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×82349172² = 13562772258171168, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 2287477 = 82349172 / (8 + 2 + 3 + 4 + 9 + 1 + 7 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1143703 + ... + 1143774.

Almost surely, 2^82349172 is an apocalyptic number.

It is an amenable number.

82349172 is an abundant number, since it is smaller than the sum of its proper divisors (125811326).

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

82349172 is a wasteful number, since it uses less digits than its factorization.

82349172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2287487 (or 2287482 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 82349172 is about 9074.6444558451. The cubic root of 82349172 is about 435.0639303582.

The spelling of 82349172 in words is "eighty-two million, three hundred forty-nine thousand, one hundred seventy-two".