1520712732 has 96 divisors (see below), whose sum is σ = 4459069440. Its totient is φ = 391849920.

The previous prime is 1520712653. The next prime is 1520712749. The reversal of 1520712732 is 2372170251.

It is a self number, because there is not a number n which added to its sum of digits gives 1520712732.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 110869 + ... + 123827.

It is an arithmetic number, because the mean of its divisors is an integer number (46448640).

Almost surely, 2^1520712732 is an apocalyptic number.

1520712732 is a gapful number since it is divisible by the number (12) 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 1520712732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2229534720).

1520712732 is an abundant number, since it is smaller than the sum of its proper divisors (2938356708).

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

1520712732 is a wasteful number, since it uses less digits than its factorization.

1520712732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13111 (or 13109 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 30.

The square root of 1520712732 is about 38996.3169030102. The cubic root of 1520712732 is about 1149.9590992385.

Adding to 1520712732 its reverse (2372170251), we get a palindrome (3892882983).

The spelling of 1520712732 in words is "one billion, five hundred twenty million, seven hundred twelve thousand, seven hundred thirty-two".