1390016 has 28 divisors (see below), whose sum is σ = 2837688. Its totient is φ = 675072.

The previous prime is 1390003. The next prime is 1390019. The reversal of 1390016 is 6100931.

It is a self number, because there is not a number n which added to its sum of digits gives 1390016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1390019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2075 + ... + 2661.

It is an arithmetic number, because the mean of its divisors is an integer number (101346).

2^1390016 is an apocalyptic number.

1390016 is a gapful number since it is divisible by the number (16) 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 1390016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1418844).

1390016 is an abundant number, since it is smaller than the sum of its proper divisors (1447672).

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

1390016 is an equidigital number, since it uses as much as digits as its factorization.

1390016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636 (or 626 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 1390016 is about 1178.9893977471. The cubic root of 1390016 is about 111.6023311992.

Adding to 1390016 its reverse (6100931), we get a palindrome (7490947).

Subtracting 1390016 from its reverse (6100931), we obtain a triangular number (4710915 = T₃₀₆₉).

The spelling of 1390016 in words is "one million, three hundred ninety thousand, sixteen".