15172230 has 32 divisors (see below), whose sum is σ = 36520704. Its totient is φ = 4034016.

The previous prime is 15172193. The next prime is 15172231. The reversal of 15172230 is 3227151.

It is a junction number, because it is equal to n+sod(n) for n = 15172197 and 15172206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15172231) 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 15 ways as a sum of consecutive naturals, for example, 15207 + ... + 16173.

It is an arithmetic number, because the mean of its divisors is an integer number (1141272).

Almost surely, 2^15172230 is an apocalyptic number.

15172230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15172230 is an abundant number, since it is smaller than the sum of its proper divisors (21348474).

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

15172230 is a wasteful number, since it uses less digits than its factorization.

15172230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1500.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 15172230 is about 3895.1546824228. The cubic root of 15172230 is about 247.5615192446.

Adding to 15172230 its reverse (3227151), we get a palindrome (18399381).

The spelling of 15172230 in words is "fifteen million, one hundred seventy-two thousand, two hundred thirty".