1534520240 has 80 divisors (see below), whose sum is σ = 3997378080. Its totient is φ = 542914560.

The previous prime is 1534520213. The next prime is 1534520257. The reversal of 1534520240 is 420254351.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

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 15 ways as a sum of consecutive naturals, for example, 8996 + ... + 56124.

It is an arithmetic number, because the mean of its divisors is an integer number (49967226).

Almost surely, 2^1534520240 is an apocalyptic number.

1534520240 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 1534520240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1998689040).

1534520240 is an abundant number, since it is smaller than the sum of its proper divisors (2462857840).

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

1534520240 is a wasteful number, since it uses less digits than its factorization.

1534520240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47190 (or 47184 counting only the distinct ones).

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

The square root of 1534520240 is about 39172.9529139686. The cubic root of 1534520240 is about 1153.4290192775.

Adding to 1534520240 its reverse (420254351), we get a palindrome (1954774591).

The spelling of 1534520240 in words is "one billion, five hundred thirty-four million, five hundred twenty thousand, two hundred forty".