32020001520 has 80 divisors (see below), whose sum is σ = 106897553952. Its totient is φ = 7881845760.

The previous prime is 32020001473. The next prime is 32020001521. The reversal of 32020001520 is 2510002023.

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

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 32020001520.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32020001521) 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, 5128291 + ... + 5134530.

Almost surely, 2^32020001520 is an apocalyptic number.

32020001520 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

32020001520 is an abundant number, since it is smaller than the sum of its proper divisors (74877552432).

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

32020001520 is a wasteful number, since it uses less digits than its factorization.

32020001520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10262850 (or 10262844 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

Adding to 32020001520 its reverse (2510002023), we get a palindrome (34530003543).

The spelling of 32020001520 in words is "thirty-two billion, twenty million, one thousand, five hundred twenty".