82731772 has 6 divisors (see below), whose sum is σ = 144780608. Its totient is φ = 41365884.

The previous prime is 82731769. The next prime is 82731787. The reversal of 82731772 is 27713728.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10341468 + ... + 10341475.

Almost surely, 2^82731772 is an apocalyptic number.

It is an amenable number.

82731772 is a deficient number, since it is larger than the sum of its proper divisors (62048836).

82731772 is a wasteful number, since it uses less digits than its factorization.

82731772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20682947 (or 20682945 counting only the distinct ones).

The product of its digits is 32928, while the sum is 37.

The square root of 82731772 is about 9095.7007426586. The cubic root of 82731772 is about 435.7366686957.

The spelling of 82731772 in words is "eighty-two million, seven hundred thirty-one thousand, seven hundred seventy-two".