8490378 has 64 divisors (see below), whose sum is σ = 20442240. Its totient is φ = 2322432.

The previous prime is 8490341. The next prime is 8490379. The reversal of 8490378 is 8730948.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8490379) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25026 + ... + 25362.

It is an arithmetic number, because the mean of its divisors is an integer number (319410).

Almost surely, 2^8490378 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8490378, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10221120).

8490378 is an abundant number, since it is smaller than the sum of its proper divisors (11951862).

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

8490378 is a wasteful number, since it uses less digits than its factorization.

8490378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 8490378 is about 2913.8253207768. The cubic root of 8490378 is about 204.0057187939.

The spelling of 8490378 in words is "eight million, four hundred ninety thousand, three hundred seventy-eight".