99770132 has 48 divisors (see below), whose sum is σ = 218792448. Its totient is φ = 38673120.

The previous prime is 99770129. The next prime is 99770141. The reversal of 99770132 is 23107799.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69203 + ... + 70629.

It is an arithmetic number, because the mean of its divisors is an integer number (4558176).

Almost surely, 2^99770132 is an apocalyptic number.

It is a pronic number, being equal to 9988×9989.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99770132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109396224).

99770132 is an abundant number, since it is smaller than the sum of its proper divisors (119022316).

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

99770132 is a wasteful number, since it uses less digits than its factorization.

99770132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1676 (or 1674 counting only the distinct ones).

The product of its (nonzero) digits is 23814, while the sum is 38.

The square root of 99770132 is about 9988.4999874856. The cubic root of 99770132 is about 463.8029595895.

The spelling of 99770132 in words is "ninety-nine million, seven hundred seventy thousand, one hundred thirty-two".