532139040 has 144 divisors (see below), whose sum is σ = 1894995648. Its totient is φ = 135725568.

The previous prime is 532139033. The next prime is 532139053. The reversal of 532139040 is 40931235.

532139040 is a `hidden beast` number, since 532 + 1 + 3 + 90 + 40 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 532138995 and 532139013.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25087 + ... + 41153.

It is an arithmetic number, because the mean of its divisors is an integer number (13159692).

Almost surely, 2^532139040 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 532139040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (947497824).

532139040 is an abundant number, since it is smaller than the sum of its proper divisors (1362856608).

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

532139040 is a wasteful number, since it uses less digits than its factorization.

532139040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16111 (or 16100 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 532139040 is about 23068.1390666868. The cubic root of 532139040 is about 810.3544859021.

The spelling of 532139040 in words is "five hundred thirty-two million, one hundred thirty-nine thousand, forty".