12905028 has 72 divisors (see below), whose sum is σ = 35417760. Its totient is φ = 4062960.

The previous prime is 12905003. The next prime is 12905041. The reversal of 12905028 is 82050921.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 12904992 and 12905010.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38823 + ... + 39153.

Almost surely, 2^12905028 is an apocalyptic number.

12905028 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12905028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17708880).

12905028 is an abundant number, since it is smaller than the sum of its proper divisors (22512732).

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

12905028 is a wasteful number, since it uses less digits than its factorization.

12905028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382 (or 355 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 12905028 is about 3592.3568865022. The cubic root of 12905028 is about 234.5594765205.

Adding to 12905028 its reverse (82050921), we get a palindrome (94955949).

The spelling of 12905028 in words is "twelve million, nine hundred five thousand, twenty-eight".