82148440 has 32 divisors (see below), whose sum is σ = 201638160. Its totient is φ = 29872000.

The previous prime is 82148413. The next prime is 82148441. The reversal of 82148440 is 4484128.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82148441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92911 + ... + 93790.

Almost surely, 2^82148440 is an apocalyptic number.

It is an amenable number.

82148440 is an abundant number, since it is smaller than the sum of its proper divisors (119489720).

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

82148440 is a wasteful number, since it uses less digits than its factorization.

82148440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186723 (or 186719 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 31.

The square root of 82148440 is about 9063.5776600634. The cubic root of 82148440 is about 434.7101429198.

The spelling of 82148440 in words is "eighty-two million, one hundred forty-eight thousand, four hundred forty".