99978048 has 42 divisors (see below), whose sum is σ = 286570674. Its totient is φ = 33325824.

The previous prime is 99978041. The next prime is 99978059. The reversal of 99978048 is 84087999.

It can be written as a sum of positive squares in only one way, i.e., 52533504 + 47444544 = 7248^2 + 6888^2 .

It is a super-2 number, since 2×99978048² = 19991220163780608, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 99977985 and 99978003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99978041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 86211 + ... + 87362.

Almost surely, 2^99978048 is an apocalyptic number.

It is an amenable number.

99978048 is an abundant number, since it is smaller than the sum of its proper divisors (186592626).

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

99978048 is a wasteful number, since it uses less digits than its factorization.

99978048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173591 (or 173578 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 54.

The square root of 99978048 is about 9998.9023397571. The cubic root of 99978048 is about 464.1249168230.

The spelling of 99978048 in words is "ninety-nine million, nine hundred seventy-eight thousand, forty-eight".