12851890 has 16 divisors (see below), whose sum is σ = 23201280. Its totient is φ = 5125680.

The previous prime is 12851851. The next prime is 12851897. The reversal of 12851890 is 9815821.

It is not an unprimeable number, because it can be changed into a prime (12851897) 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, 2095 + ... + 5485.

It is an arithmetic number, because the mean of its divisors is an integer number (1450080).

Almost surely, 2^12851890 is an apocalyptic number.

12851890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12851890 is a deficient number, since it is larger than the sum of its proper divisors (10349390).

12851890 is a wasteful number, since it uses less digits than its factorization.

12851890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3777.

The product of its (nonzero) digits is 5760, while the sum is 34.

The square root of 12851890 is about 3584.9532772409. The cubic root of 12851890 is about 234.2370913728.

The spelling of 12851890 in words is "twelve million, eight hundred fifty-one thousand, eight hundred ninety".