82151998 has 8 divisors (see below), whose sum is σ = 128585808. Its totient is φ = 39290064.

The previous prime is 82151969. The next prime is 82152001. The reversal of 82151998 is 89915128.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 892911 + ... + 893002.

It is an arithmetic number, because the mean of its divisors is an integer number (16073226).

Almost surely, 2^82151998 is an apocalyptic number.

82151998 is a deficient number, since it is larger than the sum of its proper divisors (46433810).

82151998 is a wasteful number, since it uses less digits than its factorization.

82151998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1785938.

The product of its digits is 51840, while the sum is 43.

The square root of 82151998 is about 9063.7739380459. The cubic root of 82151998 is about 434.7164188611.

The spelling of 82151998 in words is "eighty-two million, one hundred fifty-one thousand, nine hundred ninety-eight".