12770420 has 24 divisors (see below), whose sum is σ = 28881384. Its totient is φ = 4715136.

The previous prime is 12770399. The next prime is 12770423. The reversal of 12770420 is 2407721.

12770420 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 4 ways, for example, as 1628176 + 11142244 = 1276^2 + 3338^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12770423) 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, 24299 + ... + 24818.

It is an arithmetic number, because the mean of its divisors is an integer number (1203391).

Almost surely, 2^12770420 is an apocalyptic number.

12770420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12770420 is an abundant number, since it is smaller than the sum of its proper divisors (16110964).

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

12770420 is a wasteful number, since it uses less digits than its factorization.

12770420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49139 (or 49137 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 23.

The square root of 12770420 is about 3573.5724422488. The cubic root of 12770420 is about 233.7410874808.

The spelling of 12770420 in words is "twelve million, seven hundred seventy thousand, four hundred twenty".