1396780212 has 96 divisors (see below), whose sum is σ = 3498929280. Its totient is φ = 432414720.

The previous prime is 1396780211. The next prime is 1396780241. The reversal of 1396780212 is 2120876931.

It is a super-3 number, since 3×1396780212³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1396780211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3029662 + ... + 3030122.

It is an arithmetic number, because the mean of its divisors is an integer number (36447180).

Almost surely, 2^1396780212 is an apocalyptic number.

1396780212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1396780212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1749464640).

1396780212 is an abundant number, since it is smaller than the sum of its proper divisors (2102149068).

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

1396780212 is a wasteful number, since it uses less digits than its factorization.

1396780212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721 (or 719 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 1396780212 is about 37373.5228738207. The cubic root of 1396780212 is about 1117.8306787311.

The spelling of 1396780212 in words is "one billion, three hundred ninety-six million, seven hundred eighty thousand, two hundred twelve".