99451782 has 48 divisors (see below), whose sum is σ = 228488832. Its totient is φ = 31207680.

The previous prime is 99451763. The next prime is 99451823. The reversal of 99451782 is 28715499.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18238 + ... + 23054.

It is an arithmetic number, because the mean of its divisors is an integer number (4760184).

Almost surely, 2^99451782 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99451782, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114244416).

99451782 is an abundant number, since it is smaller than the sum of its proper divisors (129037050).

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

99451782 is a wasteful number, since it uses less digits than its factorization.

99451782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4893 (or 4890 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 99451782 is about 9972.5514287969. The cubic root of 99451782 is about 463.3091277776.

The spelling of 99451782 in words is "ninety-nine million, four hundred fifty-one thousand, seven hundred eighty-two".