82126398 has 16 divisors (see below), whose sum is σ = 172897920. Its totient is φ = 25934616.

The previous prime is 82126393. The next prime is 82126423. The reversal of 82126398 is 89362128.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82126391) 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, 360090 + ... + 360317.

It is an arithmetic number, because the mean of its divisors is an integer number (10806120).

Almost surely, 2^82126398 is an apocalyptic number.

82126398 is an abundant number, since it is smaller than the sum of its proper divisors (90771522).

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

82126398 is a wasteful number, since it uses less digits than its factorization.

82126398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720431.

The product of its digits is 41472, while the sum is 39.

The square root of 82126398 is about 9062.3616127365. The cubic root of 82126398 is about 434.6712590891.

The spelling of 82126398 in words is "eighty-two million, one hundred twenty-six thousand, three hundred ninety-eight".