99010820 has 12 divisors (see below), whose sum is σ = 207922764. Its totient is φ = 39604320.

The previous prime is 99010799. The next prime is 99010823. The reversal of 99010820 is 2801099.

It can be written as a sum of positive squares in 2 ways, for example, as 61089856 + 37920964 = 7816^2 + 6158^2 .

It is not an unprimeable number, because it can be changed into a prime (99010823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2475251 + ... + 2475290.

It is an arithmetic number, because the mean of its divisors is an integer number (17326897).

Almost surely, 2^99010820 is an apocalyptic number.

It is an amenable number.

99010820 is an abundant number, since it is smaller than the sum of its proper divisors (108911944).

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

99010820 is a wasteful number, since it uses less digits than its factorization.

99010820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4950550 (or 4950548 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 99010820 is about 9950.4180816687. The cubic root of 99010820 is about 462.6233535109.

The spelling of 99010820 in words is "ninety-nine million, ten thousand, eight hundred twenty".