90105704 has 32 divisors (see below), whose sum is σ = 182626920. Its totient is φ = 41431296.

The previous prime is 90105703. The next prime is 90105707. The reversal of 90105704 is 40750109.

It can be written as a sum of positive squares in 4 ways, for example, as 70728100 + 19377604 = 8410^2 + 4402^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (90105703) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28994 + ... + 31950.

Almost surely, 2^90105704 is an apocalyptic number.

It is an amenable number.

90105704 is an abundant number, since it is smaller than the sum of its proper divisors (92521216).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90105704 is a wasteful number, since it uses less digits than its factorization.

90105704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3269 (or 3265 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 90105704 is about 9492.4024356324. The cubic root of 90105704 is about 448.3158513503.

It can be divided in two parts, 90105 and 704, that added together give a palindrome (90809).

The spelling of 90105704 in words is "ninety million, one hundred five thousand, seven hundred four".