13250000 has 70 divisors (see below), whose sum is σ = 32694894. Its totient is φ = 5200000.

The previous prime is 13249997. The next prime is 13250009. The reversal of 13250000 is 5231.

It can be written as a sum of positive squares in 7 ways, for example, as 13162384 + 87616 = 3628^2 + 296^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13250009) by changing a digit.

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 13 ways as a sum of consecutive naturals, for example, 249974 + ... + 250026.

Almost surely, 2^13250000 is an apocalyptic number.

13250000 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 13250000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16347447).

13250000 is an abundant number, since it is smaller than the sum of its proper divisors (19444894).

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

13250000 is an frugal number, since it uses more digits than its factorization.

13250000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91 (or 60 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 11.

The square root of 13250000 is about 3640.0549446403. The cubic root of 13250000 is about 236.6311745582.

Adding to 13250000 its reverse (5231), we get a palindrome (13255231).

The spelling of 13250000 in words is "thirteen million, two hundred fifty thousand".