1339872 has 48 divisors (see below), whose sum is σ = 3728592. Its totient is φ = 419840.

The previous prime is 1339859. The next prime is 1339873. The reversal of 1339872 is 2789331.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1339873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1222 + ... + 2042.

It is an arithmetic number, because the mean of its divisors is an integer number (77679).

2^1339872 is an apocalyptic number.

1339872 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 1339872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1864296).

1339872 is an abundant number, since it is smaller than the sum of its proper divisors (2388720).

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

1339872 is a wasteful number, since it uses less digits than its factorization.

1339872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851 (or 843 counting only the distinct ones).

The product of its digits is 9072, while the sum is 33.

The square root of 1339872 is about 1157.5284013794. The cubic root of 1339872 is about 110.2438666689.

It can be divided in two parts, 1339 and 872, that added together give a triangular number (2211 = T₆₆).

The spelling of 1339872 in words is "one million, three hundred thirty-nine thousand, eight hundred seventy-two".