12900030 has 128 divisors (see below), whose sum is σ = 37933056. Its totient is φ = 2764800.

The previous prime is 12900011. The next prime is 12900047. The reversal of 12900030 is 3000921.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 12899982 and 12900009.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 132942 + ... + 133038.

It is an arithmetic number, because the mean of its divisors is an integer number (296352).

Almost surely, 2^12900030 is an apocalyptic number.

12900030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12900030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18966528).

12900030 is an abundant number, since it is smaller than the sum of its proper divisors (25033026).

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

12900030 is a wasteful number, since it uses less digits than its factorization.

12900030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 12900030 is about 3591.6611755565. The cubic root of 12900030 is about 234.5291916930.

Adding to 12900030 its reverse (3000921), we get a palindrome (15900951).

The spelling of 12900030 in words is "twelve million, nine hundred thousand, thirty".