2445520 has 80 divisors (see below), whose sum is σ = 7106688. Its totient is φ = 760320.

The previous prime is 2445517. The next prime is 2445523. The reversal of 2445520 is 255442.

It is an interprime number because it is at equal distance from previous prime (2445517) and next prime (2445523).

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

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 2445491 and 2445500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2445523) 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, 5962 + ... + 6358.

2^2445520 is an apocalyptic number.

2445520 is a gapful number since it is divisible by the number (20) 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 2445520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3553344).

2445520 is an abundant number, since it is smaller than the sum of its proper divisors (4661168).

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

2445520 is a wasteful number, since it uses less digits than its factorization.

2445520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428 (or 422 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 2445520 is about 1563.8158459358. The cubic root of 2445520 is about 134.7277549638.

The spelling of 2445520 in words is "two million, four hundred forty-five thousand, five hundred twenty".