82149015 has 32 divisors (see below), whose sum is σ = 149881536. Its totient is φ = 38062080.

The previous prime is 82148999. The next prime is 82149073. The reversal of 82149015 is 51094128.

It is a happy number.

It is not a de Polignac number, because 82149015 - 2⁴ = 82148999 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9076 + ... + 15705.

It is an arithmetic number, because the mean of its divisors is an integer number (4683798).

Almost surely, 2^82149015 is an apocalyptic number.

82149015 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

82149015 is a deficient number, since it is larger than the sum of its proper divisors (67732521).

82149015 is a wasteful number, since it uses less digits than its factorization.

82149015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24819.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 82149015 is about 9063.6093803738. The cubic root of 82149015 is about 434.7111571722.

The spelling of 82149015 in words is "eighty-two million, one hundred forty-nine thousand, fifteen".