82157448 has 32 divisors (see below), whose sum is σ = 207516960. Its totient is φ = 27102720.

The previous prime is 82157419. The next prime is 82157461. The reversal of 82157448 is 84475128.

It is a happy number.

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, 15318 + ... + 19973.

It is an arithmetic number, because the mean of its divisors is an integer number (6484905).

Almost surely, 2^82157448 is an apocalyptic number.

It is an amenable number.

82157448 is an abundant number, since it is smaller than the sum of its proper divisors (125359512).

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

82157448 is a wasteful number, since it uses less digits than its factorization.

82157448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35397 (or 35393 counting only the distinct ones).

The product of its digits is 71680, while the sum is 39.

The square root of 82157448 is about 9064.0745804522. The cubic root of 82157448 is about 434.7260317419.

The spelling of 82157448 in words is "eighty-two million, one hundred fifty-seven thousand, four hundred forty-eight".