88991100 has 216 divisors, whose sum is σ = 310761360. Its totient is φ = 21120000.

The previous prime is 88991099. The next prime is 88991101. The reversal of 88991100 is 119988.

It is an interprime number because it is at equal distance from previous prime (88991099) and next prime (88991101).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88991101) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 881050 + ... + 881150.

It is an arithmetic number, because the mean of its divisors is an integer number (1438710).

Almost surely, 2^88991100 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 88991100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155380680).

88991100 is an abundant number, since it is smaller than the sum of its proper divisors (221770260).

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

88991100 is a wasteful number, since it uses less digits than its factorization.

88991100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221 (or 211 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 36.

The square root of 88991100 is about 9433.5094212069. The cubic root of 88991100 is about 446.4596265787.

It can be divided in two parts, 8899 and 1100, that added together give a palindrome (9999).

The spelling of 88991100 in words is "eighty-eight million, nine hundred ninety-one thousand, one hundred".