1528369 has 4 divisors (see below), whose sum is σ = 1530880. Its totient is φ = 1525860.

The previous prime is 1528333. The next prime is 1528399. The reversal of 1528369 is 9638251.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1528369 - 2⁹ = 1527857 is a prime.

It is a super-2 number, since 2×1528369² = 4671823600322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1528399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 304 + ... + 1774.

It is an arithmetic number, because the mean of its divisors is an integer number (382720).

2^1528369 is an apocalyptic number.

It is an amenable number.

1528369 is a deficient number, since it is larger than the sum of its proper divisors (2511).

1528369 is a wasteful number, since it uses less digits than its factorization.

1528369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2510.

The product of its digits is 12960, while the sum is 34.

The square root of 1528369 is about 1236.2722192139. The cubic root of 1528369 is about 115.1885752961.

The spelling of 1528369 in words is "one million, five hundred twenty-eight thousand, three hundred sixty-nine".