8061240 has 128 divisors (see below), whose sum is σ = 27371520. Its totient is φ = 1881600.

The previous prime is 8061223. The next prime is 8061289. The reversal of 8061240 is 421608.

It is an Ulam number.

It is a congruent number.

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, 40822 + ... + 41018.

It is an arithmetic number, because the mean of its divisors is an integer number (213840).

Almost surely, 2^8061240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8061240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13685760).

8061240 is an abundant number, since it is smaller than the sum of its proper divisors (19310280).

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

8061240 is a wasteful number, since it uses less digits than its factorization.

8061240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253 (or 249 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 8061240 is about 2839.2322906025. The cubic root of 8061240 is about 200.5090366426.

Adding to 8061240 its reverse (421608), we get a palindrome (8482848).

The spelling of 8061240 in words is "eight million, sixty-one thousand, two hundred forty".