15132220 has 24 divisors (see below), whose sum is σ = 31850784. Its totient is φ = 6038976.

The previous prime is 15132217. The next prime is 15132251. The reversal of 15132220 is 2223151.

It is a junction number, because it is equal to n+sod(n) for n = 15132194 and 15132203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16617 + ... + 17503.

It is an arithmetic number, because the mean of its divisors is an integer number (1327116).

Almost surely, 2^15132220 is an apocalyptic number.

15132220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15132220 is an abundant number, since it is smaller than the sum of its proper divisors (16718564).

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

15132220 is a wasteful number, since it uses less digits than its factorization.

15132220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1749 (or 1747 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 15132220 is about 3890.0154241339. The cubic root of 15132220 is about 247.3437165929.

Subtracting from 15132220 its product of nonzero digits (120), we obtain a square (15132100 = 3890²).

Adding to 15132220 its reverse (2223151), we get a palindrome (17355371).

The spelling of 15132220 in words is "fifteen million, one hundred thirty-two thousand, two hundred twenty".