13212738 has 48 divisors (see below), whose sum is σ = 35695296. Its totient is φ = 3431520.

The previous prime is 13212713. The next prime is 13212743. The reversal of 13212738 is 83721231.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3381 + ... + 6152.

It is an arithmetic number, because the mean of its divisors is an integer number (743652).

Almost surely, 2^13212738 is an apocalyptic number.

13212738 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13212738 is an abundant number, since it is smaller than the sum of its proper divisors (22482558).

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

13212738 is a wasteful number, since it uses less digits than its factorization.

13212738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9559 (or 9556 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 13212738 is about 3634.9330117624. The cubic root of 13212738 is about 236.4091461500.

Adding to 13212738 its reverse (83721231), we get a palindrome (96933969).

The spelling of 13212738 in words is "thirteen million, two hundred twelve thousand, seven hundred thirty-eight".