90816826 has 4 divisors (see below), whose sum is σ = 136225242. Its totient is φ = 45408412.

The previous prime is 90816799. The next prime is 90816853. The reversal of 90816826 is 62861809.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (90816799) and next prime (90816853).

It can be written as a sum of positive squares in only one way, i.e., 58905625 + 31911201 = 7675^2 + 5649^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22704205 + ... + 22704208.

Almost surely, 2^90816826 is an apocalyptic number.

90816826 is a deficient number, since it is larger than the sum of its proper divisors (45408416).

90816826 is a wasteful number, since it uses less digits than its factorization.

90816826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45408415.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 90816826 is about 9529.7862515379. The cubic root of 90816826 is about 449.4921447623.

The spelling of 90816826 in words is "ninety million, eight hundred sixteen thousand, eight hundred twenty-six".