8540490 has 64 divisors (see below), whose sum is σ = 23814144. Its totient is φ = 1919808.

The previous prime is 8540479. The next prime is 8540501. The reversal of 8540490 is 940458.

It is an interprime number because it is at equal distance from previous prime (8540479) and next prime (8540501).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13767 + ... + 14373.

It is an arithmetic number, because the mean of its divisors is an integer number (372096).

Almost surely, 2^8540490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8540490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11907072).

8540490 is an abundant number, since it is smaller than the sum of its proper divisors (15273654).

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

8540490 is a wasteful number, since it uses less digits than its factorization.

8540490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 8540490 is about 2922.4116753120. The cubic root of 8540490 is about 204.4062933126.

The spelling of 8540490 in words is "eight million, five hundred forty thousand, four hundred ninety".