1339680 has 48 divisors (see below), whose sum is σ = 4221504. Its totient is φ = 357120.

The previous prime is 1339673. The next prime is 1339687. The reversal of 1339680 is 869331.

It is an interprime number because it is at equal distance from previous prime (1339673) and next prime (1339687).

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (1339687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 916 + ... + 1875.

It is an arithmetic number, because the mean of its divisors is an integer number (87948).

2^1339680 is an apocalyptic number.

1339680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1339680 is an abundant number, since it is smaller than the sum of its proper divisors (2881824).

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

1339680 is a wasteful number, since it uses less digits than its factorization.

1339680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2809 (or 2801 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 1339680 is about 1157.4454630781. The cubic root of 1339680 is about 110.2386005357.

It can be divided in two parts, 13 and 39680, that added together give a palindrome (39693).

The spelling of 1339680 in words is "one million, three hundred thirty-nine thousand, six hundred eighty".