2245540 has 48 divisors (see below), whose sum is σ = 5261760. Its totient is φ = 798080.

The previous prime is 2245501. The next prime is 2245541. The reversal of 2245540 is 455422.

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

It is not an unprimeable number, because it can be changed into a prime (2245541) 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, 12894 + ... + 13066.

It is an arithmetic number, because the mean of its divisors is an integer number (109620).

2^2245540 is an apocalyptic number.

2245540 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 2245540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2630880).

2245540 is an abundant number, since it is smaller than the sum of its proper divisors (3016220).

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

2245540 is a wasteful number, since it uses less digits than its factorization.

2245540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252 (or 250 counting only the distinct ones).

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

The square root of 2245540 is about 1498.5125958763. The cubic root of 2245540 is about 130.9504309089.

It can be divided in two parts, 2 and 245540, that added together give a palindrome (245542).

The spelling of 2245540 in words is "two million, two hundred forty-five thousand, five hundred forty".