90823508 has 6 divisors (see below), whose sum is σ = 158941146. Its totient is φ = 45411752.

The previous prime is 90823483. The next prime is 90823511. The reversal of 90823508 is 80532809.

It can be written as a sum of positive squares in only one way, i.e., 48469444 + 42354064 = 6962^2 + 6508^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11352935 + ... + 11352942.

It is an arithmetic number, because the mean of its divisors is an integer number (26490191).

Almost surely, 2^90823508 is an apocalyptic number.

It is an amenable number.

90823508 is a deficient number, since it is larger than the sum of its proper divisors (68117638).

90823508 is a wasteful number, since it uses less digits than its factorization.

90823508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22705881 (or 22705879 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 90823508 is about 9530.1368300775. The cubic root of 90823508 is about 449.5031685376.

The spelling of 90823508 in words is "ninety million, eight hundred twenty-three thousand, five hundred eight".