1532542220 has 48 divisors (see below), whose sum is σ = 3605823648. Its totient is φ = 542223360.

The previous prime is 1532542199. The next prime is 1532542229. The reversal of 1532542220 is 222452351.

It is a self number, because there is not a number n which added to its sum of digits gives 1532542220.

It is not an unprimeable number, because it can be changed into a prime (1532542229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85997 + ... + 102276.

It is an arithmetic number, because the mean of its divisors is an integer number (75121326).

Almost surely, 2^1532542220 is an apocalyptic number.

1532542220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1532542220 is an abundant number, since it is smaller than the sum of its proper divisors (2073281428).

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

1532542220 is a wasteful number, since it uses less digits than its factorization.

1532542220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188330 (or 188328 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 1532542220 is about 39147.6975057282. The cubic root of 1532542220 is about 1152.9332103138.

Adding to 1532542220 its reverse (222452351), we get a palindrome (1754994571).

The spelling of 1532542220 in words is "one billion, five hundred thirty-two million, five hundred forty-two thousand, two hundred twenty".