99530400 has 144 divisors (see below), whose sum is σ = 327729024. Its totient is φ = 26234880.

The previous prime is 99530383. The next prime is 99530401. The reversal of 99530400 is 403599.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (99530401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 271017 + ... + 271383.

It is an arithmetic number, because the mean of its divisors is an integer number (2275896).

Almost surely, 2^99530400 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99530400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163864512).

99530400 is an abundant number, since it is smaller than the sum of its proper divisors (228198624).

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

99530400 is a wasteful number, since it uses less digits than its factorization.

99530400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503 (or 490 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 30.

The square root of 99530400 is about 9976.4923695656. The cubic root of 99530400 is about 463.4311796989.

Adding to 99530400 its reverse (403599), we get a palindrome (99933999).

The spelling of 99530400 in words is "ninety-nine million, five hundred thirty thousand, four hundred".