8257490 has 8 divisors (see below), whose sum is σ = 14863500. Its totient is φ = 3302992.

The previous prime is 8257471. The next prime is 8257499. The reversal of 8257490 is 947528.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7823209 + 434281 = 2797^2 + 659^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×8257490² = 136372282200200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8257490.

It is not an unprimeable number, because it can be changed into a prime (8257499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 412865 + ... + 412884.

Almost surely, 2^8257490 is an apocalyptic number.

8257490 is a deficient number, since it is larger than the sum of its proper divisors (6606010).

8257490 is a wasteful number, since it uses less digits than its factorization.

8257490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 825756.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 8257490 is about 2873.5848691138. The cubic root of 8257490 is about 202.1231318033.

The spelling of 8257490 in words is "eight million, two hundred fifty-seven thousand, four hundred ninety".