90812548 has 12 divisors (see below), whose sum is σ = 159013260. Its totient is φ = 45380192.

The previous prime is 90812531. The next prime is 90812549. The reversal of 90812548 is 84521809.

It can be written as a sum of positive squares in 2 ways, for example, as 31337604 + 59474944 = 5598^2 + 7712^2 .

It is a super-3 number, since 3×90812548³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (90812549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2790 + ... + 13762.

It is an arithmetic number, because the mean of its divisors is an integer number (13251105).

Almost surely, 2^90812548 is an apocalyptic number.

It is an amenable number.

90812548 is a deficient number, since it is larger than the sum of its proper divisors (68200712).

90812548 is a wasteful number, since it uses less digits than its factorization.

90812548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13046 (or 13044 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 90812548 is about 9529.5617947522. The cubic root of 90812548 is about 449.4850867546.

It can be divided in two parts, 908 and 12548, that added together give a square (13456 = 116²).

The spelling of 90812548 in words is "ninety million, eight hundred twelve thousand, five hundred forty-eight".