1532578428 has 48 divisors (see below), whose sum is σ = 4110372000. Its totient is φ = 493242624.

The previous prime is 1532578417. The next prime is 1532578429. The reversal of 1532578428 is 8248752351.

1532578428 is a `hidden beast` number, since 1 + 5 + 32 + 578 + 42 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1532578429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 241533 + ... + 247796.

It is an arithmetic number, because the mean of its divisors is an integer number (85632750).

Almost surely, 2^1532578428 is an apocalyptic number.

1532578428 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1532578428 is an abundant number, since it is smaller than the sum of its proper divisors (2577793572).

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

1532578428 is a wasteful number, since it uses less digits than its factorization.

1532578428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489371 (or 489363 counting only the distinct ones).

The product of its digits is 537600, while the sum is 45.

The square root of 1532578428 is about 39148.1599567591. The cubic root of 1532578428 is about 1152.9422900151.

The spelling of 1532578428 in words is "one billion, five hundred thirty-two million, five hundred seventy-eight thousand, four hundred twenty-eight".