12780334 has 16 divisors (see below), whose sum is σ = 22376448. Its totient is φ = 5360472.

The previous prime is 12780323. The next prime is 12780347. The reversal of 12780334 is 43308721.

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, 9054 + ... + 10369.

It is an arithmetic number, because the mean of its divisors is an integer number (1398528).

Almost surely, 2^12780334 is an apocalyptic number.

12780334 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12780334 is a deficient number, since it is larger than the sum of its proper divisors (9596114).

12780334 is a wasteful number, since it uses less digits than its factorization.

12780334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19479.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 12780334 is about 3574.9593004676. The cubic root of 12780334 is about 233.8015582077.

The spelling of 12780334 in words is "twelve million, seven hundred eighty thousand, three hundred thirty-four".