1532857980 has 144 divisors (see below), whose sum is σ = 4514668704. Its totient is φ = 388362240.

The previous prime is 1532857969. The next prime is 1532857993. The reversal of 1532857980 is 897582351.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4548372 + ... + 4548708.

It is an arithmetic number, because the mean of its divisors is an integer number (31351866).

Almost surely, 2^1532857980 is an apocalyptic number.

1532857980 is a gapful number since it is divisible by the number (10) 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 1532857980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2257334352).

1532857980 is an abundant number, since it is smaller than the sum of its proper divisors (2981810724).

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

1532857980 is a wasteful number, since it uses less digits than its factorization.

1532857980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476 (or 431 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 48.

The square root of 1532857980 is about 39151.7302299656. The cubic root of 1532857980 is about 1153.0123870756.

The spelling of 1532857980 in words is "one billion, five hundred thirty-two million, eight hundred fifty-seven thousand, nine hundred eighty".