8253520 has 80 divisors (see below), whose sum is σ = 21373632. Its totient is φ = 2938880.

The previous prime is 8253499. The next prime is 8253521. The reversal of 8253520 is 253528.

It is a tau number, because it is divible by the number of its divisors (80).

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8253521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72984 + ... + 73096.

Almost surely, 2^8253520 is an apocalyptic number.

8253520 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8253520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10686816).

8253520 is an abundant number, since it is smaller than the sum of its proper divisors (13120112).

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

8253520 is a wasteful number, since it uses less digits than its factorization.

8253520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220 (or 214 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 8253520 is about 2872.8940112716. The cubic root of 8253520 is about 202.0907346518.

The spelling of 8253520 in words is "eight million, two hundred fifty-three thousand, five hundred twenty".