16215130 has 16 divisors (see below), whose sum is σ = 29233224. Its totient is φ = 6475840.

The previous prime is 16215119. The next prime is 16215137. The reversal of 16215130 is 3151261.

It can be written as a sum of positive squares in 4 ways, for example, as 15976009 + 239121 = 3997^2 + 489^2 .

It is a junction number, because it is equal to n+sod(n) for n = 16215098 and 16215107.

It is not an unprimeable number, because it can be changed into a prime (16215137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11124 + ... + 12496.

Almost surely, 2^16215130 is an apocalyptic number.

16215130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16215130 is a deficient number, since it is larger than the sum of its proper divisors (13018094).

16215130 is a wasteful number, since it uses less digits than its factorization.

16215130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2561.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 16215130 is about 4026.8014602163. The cubic root of 16215130 is about 253.1085475259.

Adding to 16215130 its reverse (3151261), we get a palindrome (19366391).

The spelling of 16215130 in words is "sixteen million, two hundred fifteen thousand, one hundred thirty".