1386528 has 96 divisors (see below), whose sum is σ = 4318272. Its totient is φ = 384000.

The previous prime is 1386499. The next prime is 1386551. The reversal of 1386528 is 8256831.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13678 + ... + 13778.

It is an arithmetic number, because the mean of its divisors is an integer number (44982).

2^1386528 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 1386528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2159136).

1386528 is an abundant number, since it is smaller than the sum of its proper divisors (2931744).

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

1386528 is a wasteful number, since it uses less digits than its factorization.

1386528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138 (or 130 counting only the distinct ones).

The product of its digits is 11520, while the sum is 33.

The square root of 1386528 is about 1177.5092356326. The cubic root of 1386528 is about 111.5089042203.

It can be divided in two parts, 138 and 6528, that added together give a palindrome (6666).

The spelling of 1386528 in words is "one million, three hundred eighty-six thousand, five hundred twenty-eight".