15145000 has 80 divisors (see below), whose sum is σ = 38378340. Its totient is φ = 5568000.

The previous prime is 15144991. The next prime is 15145021. The reversal of 15145000 is 54151.

It is a happy number.

It can be written as a sum of positive squares in 10 ways, for example, as 5373124 + 9771876 = 2318^2 + 3126^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 64884 + ... + 65116.

Almost surely, 2^15145000 is an apocalyptic number.

15145000 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 15145000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19189170).

15145000 is an abundant number, since it is smaller than the sum of its proper divisors (23233340).

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

15145000 is a wasteful number, since it uses less digits than its factorization.

15145000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272 (or 253 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 15145000 is about 3891.6577444580. The cubic root of 15145000 is about 247.4133288335.

Adding to 15145000 its reverse (54151), we get a palindrome (15199151).

The spelling of 15145000 in words is "fifteen million, one hundred forty-five thousand".