990048078 has 24 divisors (see below), whose sum is σ = 2145902616. Its totient is φ = 329893200.

The previous prime is 990048077. The next prime is 990048113. The reversal of 990048078 is 870840099.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990048071) 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 in 11 ways as a sum of consecutive naturals, for example, 48613 + ... + 65903.

It is an arithmetic number, because the mean of its divisors is an integer number (89412609).

Almost surely, 2^990048078 is an apocalyptic number.

990048078 is an abundant number, since it is smaller than the sum of its proper divisors (1155854538).

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

990048078 is a wasteful number, since it uses less digits than its factorization.

990048078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20480 (or 20477 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 990048078 is about 31465.0294454018. The cubic root of 990048078 is about 996.6716268898.

The spelling of 990048078 in words is "nine hundred ninety million, forty-eight thousand, seventy-eight".