8117490 has 16 divisors (see below), whose sum is σ = 19482048. Its totient is φ = 2164656.

The previous prime is 8117479. The next prime is 8117491. The reversal of 8117490 is 947118.

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: 270583 = 8117490 / (8 + 1 + 1 + 7 + 4 + 9 + 0).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (8117491) 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, 135262 + ... + 135321.

It is an arithmetic number, because the mean of its divisors is an integer number (1217628).

Almost surely, 2^8117490 is an apocalyptic number.

8117490 is an abundant number, since it is smaller than the sum of its proper divisors (11364558).

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

8117490 is a wasteful number, since it uses less digits than its factorization.

8117490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270593.

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 8117490 is about 2849.1209170549. The cubic root of 8117490 is about 200.9743290400.

It can be divided in two parts, 81 and 17490, that added together give a palindrome (17571).

The spelling of 8117490 in words is "eight million, one hundred seventeen thousand, four hundred ninety".