8243490 has 16 divisors (see below), whose sum is σ = 19784448. Its totient is φ = 2198256.

The previous prime is 8243441. The next prime is 8243497. The reversal of 8243490 is 943428.

It is a happy number.

8243490 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 274783 = 8243490 / (8 + 2 + 4 + 3 + 4 + 9 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8243497) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137362 + ... + 137421.

It is an arithmetic number, because the mean of its divisors is an integer number (1236528).

Almost surely, 2^8243490 is an apocalyptic number.

8243490 is an abundant number, since it is smaller than the sum of its proper divisors (11540958).

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

8243490 is a wasteful number, since it uses less digits than its factorization.

8243490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274793.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 8243490 is about 2871.1478540821. The cubic root of 8243490 is about 202.0088386160.

The spelling of 8243490 in words is "eight million, two hundred forty-three thousand, four hundred ninety".