8250140 has 24 divisors (see below), whose sum is σ = 17457552. Its totient is φ = 3274880.

The previous prime is 8250133. The next prime is 8250157. The reversal of 8250140 is 410528.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1235 + ... + 4245.

It is an arithmetic number, because the mean of its divisors is an integer number (727398).

Almost surely, 2^8250140 is an apocalyptic number.

It is an amenable number.

8250140 is an abundant number, since it is smaller than the sum of its proper divisors (9207412).

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

8250140 is a wasteful number, since it uses less digits than its factorization.

8250140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3157 (or 3155 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 8250140 is about 2872.3056940375. The cubic root of 8250140 is about 202.0631440016.

Adding to 8250140 its reverse (410528), we get a palindrome (8660668).

The spelling of 8250140 in words is "eight million, two hundred fifty thousand, one hundred forty".