12778485 has 8 divisors (see below), whose sum is σ = 20445600. Its totient is φ = 6815184.

The previous prime is 12778483. The next prime is 12778499. The reversal of 12778485 is 58487721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12778485 - 2¹ = 12778483 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12778481) 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, 425935 + ... + 425964.

It is an arithmetic number, because the mean of its divisors is an integer number (2555700).

Almost surely, 2^12778485 is an apocalyptic number.

12778485 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12778485 is a deficient number, since it is larger than the sum of its proper divisors (7667115).

12778485 is an equidigital number, since it uses as much as digits as its factorization.

12778485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851907.

The product of its digits is 125440, while the sum is 42.

The square root of 12778485 is about 3574.7006867709. The cubic root of 12778485 is about 233.7902825521.

The spelling of 12778485 in words is "twelve million, seven hundred seventy-eight thousand, four hundred eighty-five".