1528704 has 48 divisors (see below), whose sum is σ = 4402320. Its totient is φ = 509184.

The previous prime is 1528697. The next prime is 1528717. The reversal of 1528704 is 4078251.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 489 + ... + 1815.

It is an arithmetic number, because the mean of its divisors is an integer number (91715).

2^1528704 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 1528704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2201160).

1528704 is an abundant number, since it is smaller than the sum of its proper divisors (2873616).

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

1528704 is a wasteful number, since it uses less digits than its factorization.

1528704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1347 (or 1332 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 1528704 is about 1236.4076997496. The cubic root of 1528704 is about 115.1969906621.

The spelling of 1528704 in words is "one million, five hundred twenty-eight thousand, seven hundred four".