90820998 has 12 divisors (see below), whose sum is σ = 196778868. Its totient is φ = 30273660.

The previous prime is 90820963. The next prime is 90821023. The reversal of 90820998 is 89902809.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2522788 + ... + 2522823.

It is an arithmetic number, because the mean of its divisors is an integer number (16398239).

Almost surely, 2^90820998 is an apocalyptic number.

90820998 is an abundant number, since it is smaller than the sum of its proper divisors (105957870).

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

90820998 is a wasteful number, since it uses less digits than its factorization.

90820998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5045619 (or 5045616 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The square root of 90820998 is about 9530.0051416565. The cubic root of 90820998 is about 449.4990276738.

The spelling of 90820998 in words is "ninety million, eight hundred twenty thousand, nine hundred ninety-eight".