12777530 has 8 divisors (see below), whose sum is σ = 22999572. Its totient is φ = 5111008.

The previous prime is 12777529. The next prime is 12777533. The reversal of 12777530 is 3577721.

12777530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 12524521 + 253009 = 3539^2 + 503^2 .

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

It is not an unprimeable number, because it can be changed into a prime (12777533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 638867 + ... + 638886.

Almost surely, 2^12777530 is an apocalyptic number.

12777530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12777530 is a deficient number, since it is larger than the sum of its proper divisors (10222042).

12777530 is a wasteful number, since it uses less digits than its factorization.

12777530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1277760.

The product of its (nonzero) digits is 10290, while the sum is 32.

The square root of 12777530 is about 3574.5671066578. The cubic root of 12777530 is about 233.7844583019.

The spelling of 12777530 in words is "twelve million, seven hundred seventy-seven thousand, five hundred thirty".