537020640 has 144 divisors (see below), whose sum is σ = 1973619648. Its totient is φ = 132185088.

The previous prime is 537020597. The next prime is 537020663. The reversal of 537020640 is 46020735.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (144).

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 23 ways as a sum of consecutive naturals, for example, 4377 + ... + 33063.

It is an arithmetic number, because the mean of its divisors is an integer number (13705692).

Almost surely, 2^537020640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 537020640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (986809824).

537020640 is an abundant number, since it is smaller than the sum of its proper divisors (1436599008).

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

537020640 is a wasteful number, since it uses less digits than its factorization.

537020640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28721 (or 28710 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 537020640 is about 23173.7057891050. The cubic root of 537020640 is about 812.8248875086.

The spelling of 537020640 in words is "five hundred thirty-seven million, twenty thousand, six hundred forty".