537404220 has 336 divisors, whose sum is σ = 1850929920. Its totient is φ = 130636800.

The previous prime is 537404209. The next prime is 537404233. The reversal of 537404220 is 22404735.

537404220 is a `hidden beast` number, since 5 + 37 + 404 + 220 = 666.

537404220 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 13107400 + ... + 13107440.

It is an arithmetic number, because the mean of its divisors is an integer number (5508720).

Almost surely, 2^537404220 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 537404220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (925464960).

537404220 is an abundant number, since it is smaller than the sum of its proper divisors (1313525700).

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

537404220 is a wasteful number, since it uses less digits than its factorization.

537404220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128 (or 111 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 537404220 is about 23181.9805021055. The cubic root of 537404220 is about 813.0183680713.

Adding to 537404220 its reverse (22404735), we get a palindrome (559808955).

The spelling of 537404220 in words is "five hundred thirty-seven million, four hundred four thousand, two hundred twenty".