99528778 has 16 divisors (see below), whose sum is σ = 159053760. Its totient is φ = 46547136.

The previous prime is 99528773. The next prime is 99528791. The reversal of 99528778 is 87782599.

It is not an unprimeable number, because it can be changed into a prime (99528773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3438 + ... + 14521.

It is an arithmetic number, because the mean of its divisors is an integer number (9940860).

Almost surely, 2^99528778 is an apocalyptic number.

99528778 is a deficient number, since it is larger than the sum of its proper divisors (59524982).

99528778 is a wasteful number, since it uses less digits than its factorization.

99528778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18141.

The product of its digits is 2540160, while the sum is 55.

The square root of 99528778 is about 9976.4110781383. The cubic root of 99528778 is about 463.4286622454.

The spelling of 99528778 in words is "ninety-nine million, five hundred twenty-eight thousand, seven hundred seventy-eight".