990278234 has 32 divisors (see below), whose sum is σ = 1638185472. Its totient is φ = 445230000.

The previous prime is 990278231. The next prime is 990278239. The reversal of 990278234 is 432872099.

990278234 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (990278231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1019369 + ... + 1020339.

It is an arithmetic number, because the mean of its divisors is an integer number (51193296).

Almost surely, 2^990278234 is an apocalyptic number.

990278234 is a deficient number, since it is larger than the sum of its proper divisors (647907238).

990278234 is a wasteful number, since it uses less digits than its factorization.

990278234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1442.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 990278234 is about 31468.6865629946. The cubic root of 990278234 is about 996.7488528302.

The spelling of 990278234 in words is "nine hundred ninety million, two hundred seventy-eight thousand, two hundred thirty-four".