1308528 has 80 divisors (see below), whose sum is σ = 4062240. Its totient is φ = 400896.

The previous prime is 1308523. The next prime is 1308529. The reversal of 1308528 is 8258031.

It is a happy number.

1308528 is a `hidden beast` number, since 130 + 8 + 528 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1308521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5500 + ... + 5732.

It is an arithmetic number, because the mean of its divisors is an integer number (50778).

2^1308528 is an apocalyptic number.

1308528 is a gapful number since it is divisible by the number (18) 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 1308528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2031120).

1308528 is an abundant number, since it is smaller than the sum of its proper divisors (2753712).

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

1308528 is a wasteful number, since it uses less digits than its factorization.

1308528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263 (or 251 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 1308528 is about 1143.9090872967. The cubic root of 1308528 is about 109.3774195927.

The spelling of 1308528 in words is "one million, three hundred eight thousand, five hundred twenty-eight".