90028826 has 4 divisors (see below), whose sum is σ = 135043242. Its totient is φ = 45014412.

The previous prime is 90028823. The next prime is 90028843. The reversal of 90028826 is 62882009.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 87142225 + 2886601 = 9335^2 + 1699^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (90028823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22507205 + ... + 22507208.

Almost surely, 2^90028826 is an apocalyptic number.

90028826 is a deficient number, since it is larger than the sum of its proper divisors (45014416).

90028826 is a wasteful number, since it uses less digits than its factorization.

90028826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45014415.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 90028826 is about 9488.3521224710. The cubic root of 90028826 is about 448.1883143535.

The spelling of 90028826 in words is "ninety million, twenty-eight thousand, eight hundred twenty-six".