89942820 has 48 divisors (see below), whose sum is σ = 274736448. Its totient is φ = 21804160.

The previous prime is 89942773. The next prime is 89942837. The reversal of 89942820 is 2824998.

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 15 ways as a sum of consecutive naturals, for example, 67479 + ... + 68798.

It is an arithmetic number, because the mean of its divisors is an integer number (5723676).

Almost surely, 2^89942820 is an apocalyptic number.

It is an amenable number.

89942820 is an abundant number, since it is smaller than the sum of its proper divisors (184793628).

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

89942820 is a wasteful number, since it uses less digits than its factorization.

89942820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136300 (or 136298 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 89942820 is about 9483.8188510747. The cubic root of 89942820 is about 448.0455483557.

The spelling of 89942820 in words is "eighty-nine million, nine hundred forty-two thousand, eight hundred twenty".