15320230 has 32 divisors (see below), whose sum is σ = 29401056. Its totient is φ = 5727744.

The previous prime is 15320219. The next prime is 15320237. The reversal of 15320230 is 3202351.

15320230 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15320237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38392 + ... + 38788.

It is an arithmetic number, because the mean of its divisors is an integer number (918783).

Almost surely, 2^15320230 is an apocalyptic number.

15320230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15320230 is a deficient number, since it is larger than the sum of its proper divisors (14080826).

15320230 is a wasteful number, since it uses less digits than its factorization.

15320230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 15320230 is about 3914.1065391734. The cubic root of 15320230 is about 248.3638757484.

Adding to 15320230 its reverse (3202351), we get a palindrome (18522581).

It can be divided in two parts, 15 and 320230, that multiplied together give a triangular number (4803450 = T₃₀₉₉).

The spelling of 15320230 in words is "fifteen million, three hundred twenty thousand, two hundred thirty".