99774432 has 36 divisors (see below), whose sum is σ = 283734360. Its totient is φ = 33258048.

The previous prime is 99774431. The next prime is 99774439. The reversal of 99774432 is 23447799.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99774431) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 172932 + ... + 173507.

It is an arithmetic number, because the mean of its divisors is an integer number (7881510).

Almost surely, 2^99774432 is an apocalyptic number.

It is an amenable number.

99774432 is an abundant number, since it is smaller than the sum of its proper divisors (183959928).

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

99774432 is a wasteful number, since it uses less digits than its factorization.

99774432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346455 (or 346444 counting only the distinct ones).

The product of its digits is 381024, while the sum is 45.

The square root of 99774432 is about 9988.7152327014. The cubic root of 99774432 is about 463.8096226527.

The spelling of 99774432 in words is "ninety-nine million, seven hundred seventy-four thousand, four hundred thirty-two".