538655040 has 504 divisors, whose sum is σ = 2357944992. Its totient is φ = 111605760.

The previous prime is 538655027. The next prime is 538655041. The reversal of 538655040 is 40556835.

It is a tau number, because it is divible by the number of its divisors (504).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 538654986 and 538655004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538655041) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1552147 + ... + 1552493.

Almost surely, 2^538655040 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 538655040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1178972496).

538655040 is an abundant number, since it is smaller than the sum of its proper divisors (1819289952).

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

538655040 is a wasteful number, since it uses less digits than its factorization.

538655040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395 (or 375 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The square root of 538655040 is about 23208.9431038985. The cubic root of 538655040 is about 813.6486519637.

The spelling of 538655040 in words is "five hundred thirty-eight million, six hundred fifty-five thousand, forty".