82147238 has 16 divisors (see below), whose sum is σ = 124933536. Its totient is φ = 40506240.

The previous prime is 82147207. The next prime is 82147253. The reversal of 82147238 is 83274128.

It is a super-2 number, since 2×82147238² = 13496337422057288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 82147198 and 82147207.

It is a congruent 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, 59678 + ... + 61038.

It is an arithmetic number, because the mean of its divisors is an integer number (7808346).

Almost surely, 2^82147238 is an apocalyptic number.

82147238 is a deficient number, since it is larger than the sum of its proper divisors (42786298).

82147238 is a wasteful number, since it uses less digits than its factorization.

82147238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1759.

The product of its digits is 21504, while the sum is 35.

The square root of 82147238 is about 9063.5113504646. The cubic root of 82147238 is about 434.7080226761.

The spelling of 82147238 in words is "eighty-two million, one hundred forty-seven thousand, two hundred thirty-eight".