99478228 has 6 divisors (see below), whose sum is σ = 174086906. Its totient is φ = 49739112.

The previous prime is 99478219. The next prime is 99478229. The reversal of 99478228 is 82287499.

It can be written as a sum of positive squares in only one way, i.e., 98962704 + 515524 = 9948^2 + 718^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99478229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12434775 + ... + 12434782.

Almost surely, 2^99478228 is an apocalyptic number.

It is an amenable number.

99478228 is a deficient number, since it is larger than the sum of its proper divisors (74608678).

99478228 is a wasteful number, since it uses less digits than its factorization.

99478228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24869561 (or 24869559 counting only the distinct ones).

The product of its digits is 580608, while the sum is 49.

The square root of 99478228 is about 9973.8772801754. The cubic root of 99478228 is about 463.3501915207.

The spelling of 99478228 in words is "ninety-nine million, four hundred seventy-eight thousand, two hundred twenty-eight".