538001520 has 80 divisors (see below), whose sum is σ = 1906068480. Its totient is φ = 122971392.

The previous prime is 538001489. The next prime is 538001537. The reversal of 538001520 is 25100835.

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 (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158440 + ... + 161799.

It is an arithmetic number, because the mean of its divisors is an integer number (23825856).

Almost surely, 2^538001520 is an apocalyptic number.

It is an amenable number.

538001520 is an abundant number, since it is smaller than the sum of its proper divisors (1368066960).

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

538001520 is a wasteful number, since it uses less digits than its factorization.

538001520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320262 (or 320256 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 538001520 is about 23194.8597753899. The cubic root of 538001520 is about 813.3194673500.

The spelling of 538001520 in words is "five hundred thirty-eight million, one thousand, five hundred twenty".