82666628 has 24 divisors (see below), whose sum is σ = 158219040. Its totient is φ = 37480320.

The previous prime is 82666613. The next prime is 82666637.

It is a happy number.

82666628 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (44).

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, 16883 + ... + 21221.

It is an arithmetic number, because the mean of its divisors is an integer number (6592460).

Almost surely, 2^82666628 is an apocalyptic number.

It is an amenable number.

82666628 is a deficient number, since it is larger than the sum of its proper divisors (75552412).

82666628 is a wasteful number, since it uses less digits than its factorization.

82666628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4787 (or 4785 counting only the distinct ones).

The product of its digits is 331776, while the sum is 44.

The square root of 82666628 is about 9092.1190049405. The cubic root of 82666628 is about 435.6222705529.

The spelling of 82666628 in words is "eighty-two million, six hundred sixty-six thousand, six hundred twenty-eight".