90845312 has 16 divisors (see below), whose sum is σ = 180981150. Its totient is φ = 45422592.

The previous prime is 90845303. The next prime is 90845341. The reversal of 90845312 is 21354809.

It can be written as a sum of positive squares in only one way, i.e., 64384576 + 26460736 = 8024^2 + 5144^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 354737 + ... + 354992.

Almost surely, 2^90845312 is an apocalyptic number.

It is an amenable number.

90845312 is a deficient number, since it is larger than the sum of its proper divisors (90135838).

90845312 is an equidigital number, since it uses as much as digits as its factorization.

90845312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709743 (or 709731 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 90845312 is about 9531.2807114259. The cubic root of 90845312 is about 449.5391364021.

The spelling of 90845312 in words is "ninety million, eight hundred forty-five thousand, three hundred twelve".