532821840 has 80 divisors (see below), whose sum is σ = 1653965568. Its totient is φ = 141895168.

The previous prime is 532821829. The next prime is 532821847. The reversal of 532821840 is 48128235.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×532821840² = 567798226361971200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (532821847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 356134 + ... + 357626.

Almost surely, 2^532821840 is an apocalyptic number.

It is an amenable number.

532821840 is an abundant number, since it is smaller than the sum of its proper divisors (1121143728).

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

532821840 is a wasteful number, since it uses less digits than its factorization.

532821840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2996 (or 2990 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 532821840 is about 23082.9339556305. The cubic root of 532821840 is about 810.7009326731.

The spelling of 532821840 in words is "five hundred thirty-two million, eight hundred twenty-one thousand, eight hundred forty".