82137998 has 8 divisors (see below), whose sum is σ = 126072408. Its totient is φ = 40113864.

The previous prime is 82137997. The next prime is 82138009. The reversal of 82137998 is 89973128.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82137997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 477461 + ... + 477632.

It is an arithmetic number, because the mean of its divisors is an integer number (15759051).

Almost surely, 2^82137998 is an apocalyptic number.

82137998 is a deficient number, since it is larger than the sum of its proper divisors (43934410).

82137998 is a wasteful number, since it uses less digits than its factorization.

82137998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955138.

The product of its digits is 217728, while the sum is 47.

The square root of 82137998 is about 9063.0015999116. The cubic root of 82137998 is about 434.6917232734.

The spelling of 82137998 in words is "eighty-two million, one hundred thirty-seven thousand, nine hundred ninety-eight".