90246784 has 16 divisors (see below), whose sum is σ = 179788770. Its totient is φ = 45123328.

The previous prime is 90246749. The next prime is 90246787. The reversal of 90246784 is 48764209.

It can be written as a sum of positive squares in only one way, i.e., 50808384 + 39438400 = 7128^2 + 6280^2 .

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

It is not an unprimeable number, because it can be changed into a prime (90246787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 352399 + ... + 352654.

Almost surely, 2^90246784 is an apocalyptic number.

It is an amenable number.

90246784 is a deficient number, since it is larger than the sum of its proper divisors (89541986).

90246784 is an equidigital number, since it uses as much as digits as its factorization.

90246784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705067 (or 705055 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 90246784 is about 9499.8307353342. The cubic root of 90246784 is about 448.5497078711.

The spelling of 90246784 in words is "ninety million, two hundred forty-six thousand, seven hundred eighty-four".