13445000 has 40 divisors (see below), whose sum is σ = 31513350. Its totient is φ = 5376000.

The previous prime is 13444999. The next prime is 13445017. The reversal of 13445000 is 54431.

It can be written as a sum of positive squares in 5 ways, for example, as 470596 + 12974404 = 686^2 + 3602^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 13445000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3656 + ... + 6344.

Almost surely, 2^13445000 is an apocalyptic number.

13445000 is a gapful number since it is divisible by the number (10) 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 13445000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15756675).

13445000 is an abundant number, since it is smaller than the sum of its proper divisors (18068350).

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

13445000 is an equidigital number, since it uses as much as digits as its factorization.

13445000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2715 (or 2696 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 13445000 is about 3666.7424234598. The cubic root of 13445000 is about 237.7863581949.

Adding to 13445000 its reverse (54431), we get a palindrome (13499431).

The spelling of 13445000 in words is "thirteen million, four hundred forty-five thousand".