533631780 has 144 divisors (see below), whose sum is σ = 1825057920. Its totient is φ = 129349440.

The previous prime is 533631779. The next prime is 533631781. The reversal of 533631780 is 87136335.

533631780 is a `hidden beast` number, since 5 + 336 + 317 + 8 + 0 = 666.

533631780 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (533631779) and next prime (533631781).

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

It is not an unprimeable number, because it can be changed into a prime (533631781) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 61257 + ... + 69423.

Almost surely, 2^533631780 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 533631780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (912528960).

533631780 is an abundant number, since it is smaller than the sum of its proper divisors (1291426140).

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

533631780 is a wasteful number, since it uses less digits than its factorization.

533631780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8207 (or 8188 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 533631780 is about 23100.4714237610. The cubic root of 533631780 is about 811.1115056120. Note that the first 3 decimals are identical.

The spelling of 533631780 in words is "five hundred thirty-three million, six hundred thirty-one thousand, seven hundred eighty".