1378872 has 48 divisors (see below), whose sum is σ = 4076280. Its totient is φ = 417600.

The previous prime is 1378859. The next prime is 1378903. The reversal of 1378872 is 2788731.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 79 + ... + 1662.

2^1378872 is an apocalyptic number.

1378872 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 1378872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2038140).

1378872 is an abundant number, since it is smaller than the sum of its proper divisors (2697408).

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

1378872 is a wasteful number, since it uses less digits than its factorization.

1378872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1764 (or 1757 counting only the distinct ones).

The product of its digits is 18816, while the sum is 36.

The square root of 1378872 is about 1174.2538056144. The cubic root of 1378872 is about 111.3032855035.

It can be divided in two parts, 137 and 8872, that added together give a palindrome (9009).

The spelling of 1378872 in words is "one million, three hundred seventy-eight thousand, eight hundred seventy-two".