82815826 has 8 divisors (see below), whose sum is σ = 124910604. Its totient is φ = 41178960.

The previous prime is 82815809. The next prime is 82815841. The reversal of 82815826 is 62851828.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 82791801 + 24025 = 9099^2 + 155^2 .

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

It is a super-2 number, since 2×82815826² = 13716922072124552, which contains 22 as substring.

It is a plaindrome in base 12.

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, 114025 + ... + 114748.

Almost surely, 2^82815826 is an apocalyptic number.

82815826 is a deficient number, since it is larger than the sum of its proper divisors (42094778).

82815826 is a wasteful number, since it uses less digits than its factorization.

82815826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228956.

The product of its digits is 61440, while the sum is 40.

The square root of 82815826 is about 9100.3201042601. The cubic root of 82815826 is about 435.8841856350.

The spelling of 82815826 in words is "eighty-two million, eight hundred fifteen thousand, eight hundred twenty-six".