12764478 has 16 divisors (see below), whose sum is σ = 25683840. Its totient is φ = 4229016.

The previous prime is 12764461. The next prime is 12764503. The reversal of 12764478 is 87446721.

12764478 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12764478² = 325863797224968, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5368 + ... + 7371.

It is an arithmetic number, because the mean of its divisors is an integer number (1605240).

Almost surely, 2^12764478 is an apocalyptic number.

12764478 is an abundant number, since it is smaller than the sum of its proper divisors (12919362).

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

12764478 is a wasteful number, since it uses less digits than its factorization.

12764478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12911.

The product of its digits is 75264, while the sum is 39.

The square root of 12764478 is about 3572.7409645817. The cubic root of 12764478 is about 233.7048290803.

The spelling of 12764478 in words is "twelve million, seven hundred sixty-four thousand, four hundred seventy-eight".