1398276 has 72 divisors (see below), whose sum is σ = 4021920. Its totient is φ = 419760.
The previous prime is 1398269. The next prime is 1398281. The reversal of 1398276 is 6728931.
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a self number, because there is not a number n which added to its sum of digits gives 1398276.
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, 13015 + ... + 13121.
It is an arithmetic number, because the mean of its divisors is an integer number (55860).
21398276 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 1398276, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2010960).
1398276 is an abundant number, since it is smaller than the sum of its proper divisors (2623644).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1398276 is a wasteful number, since it uses less digits than its factorization.
1398276 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 142 (or 123 counting only the distinct ones).
The product of its digits is 18144, while the sum is 36.
The square root of 1398276 is about 1182.4872092331. The cubic root of 1398276 is about 111.8229558288.
It can be divided in two parts, 13 and 98276, that added together give a palindrome (98289).
The spelling of 1398276 in words is "one million, three hundred ninety-eight thousand, two hundred seventy-six".
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