15272530 has 48 divisors (see below), whose sum is σ = 34046784. Its totient is φ = 4829760.

The previous prime is 15272519. The next prime is 15272557. The reversal of 15272530 is 3527251.

15272530 = 725² + 726² + ... + 752².

It is a junction number, because it is equal to n+sod(n) for n = 15272495 and 15272504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11185 + ... + 12475.

It is an arithmetic number, because the mean of its divisors is an integer number (709308).

Almost surely, 2^15272530 is an apocalyptic number.

15272530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15272530 is an abundant number, since it is smaller than the sum of its proper divisors (18774254).

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

15272530 is a wasteful number, since it uses less digits than its factorization.

15272530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1331 (or 1318 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 15272530 is about 3908.0084442079. The cubic root of 15272530 is about 248.1058449514.

Adding to 15272530 its reverse (3527251), we get a palindrome (18799781).

The spelling of 15272530 in words is "fifteen million, two hundred seventy-two thousand, five hundred thirty".