9278990 has 32 divisors (see below), whose sum is σ = 19367424. Its totient is φ = 3134880.

The previous prime is 9278987. The next prime is 9278993. The reversal of 9278990 is 998729.

It is an interprime number because it is at equal distance from previous prime (9278987) and next prime (9278993).

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9278993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4037 + ... + 5903.

It is an arithmetic number, because the mean of its divisors is an integer number (605232).

Almost surely, 2^9278990 is an apocalyptic number.

9278990 is an abundant number, since it is smaller than the sum of its proper divisors (10088434).

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

9278990 is a wasteful number, since it uses less digits than its factorization.

9278990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1952.

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 9278990 is about 3046.1434634633. The cubic root of 9278990 is about 210.1358908821.

The spelling of 9278990 in words is "nine million, two hundred seventy-eight thousand, nine hundred ninety".