82151274 has 8 divisors (see below), whose sum is σ = 164302560. Its totient is φ = 27383756.

The previous prime is 82151273. The next prime is 82151297. The reversal of 82151274 is 47215128.

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

82151274 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (82151273) 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, 6845934 + ... + 6845945.

It is an arithmetic number, because the mean of its divisors is an integer number (20537820).

Almost surely, 2^82151274 is an apocalyptic number.

82151274 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

82151274 is a wasteful number, since it uses less digits than its factorization.

82151274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13691884.

The product of its digits is 4480, while the sum is 30.

The square root of 82151274 is about 9063.7339987447. The cubic root of 82151274 is about 434.7151418152.

The spelling of 82151274 in words is "eighty-two million, one hundred fifty-one thousand, two hundred seventy-four".