82187244 has 24 divisors (see below), whose sum is σ = 213078320. Its totient is φ = 27395712.

The previous prime is 82187221. The next prime is 82187251. The reversal of 82187244 is 44278128.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 82187199 and 82187208.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 380389 + ... + 380604.

Almost surely, 2^82187244 is an apocalyptic number.

It is an amenable number.

82187244 is an abundant number, since it is smaller than the sum of its proper divisors (130891076).

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

82187244 is a wasteful number, since it uses less digits than its factorization.

82187244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761006 (or 760998 counting only the distinct ones).

The product of its digits is 28672, while the sum is 36.

The square root of 82187244 is about 9065.7180631211. The cubic root of 82187244 is about 434.7785793464.

The spelling of 82187244 in words is "eighty-two million, one hundred eighty-seven thousand, two hundred forty-four".