533739640 has 128 divisors (see below), whose sum is σ = 1480550400. Its totient is φ = 169067520.

The previous prime is 533739637. The next prime is 533739643. The reversal of 533739640 is 46937335.

It is an interprime number because it is at equal distance from previous prime (533739637) and next prime (533739643).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 533739593 and 533739602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (533739643) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 216897 + ... + 219343.

It is an arithmetic number, because the mean of its divisors is an integer number (11566800).

Almost surely, 2^533739640 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 533739640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (740275200).

533739640 is an abundant number, since it is smaller than the sum of its proper divisors (946810760).

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

533739640 is a wasteful number, since it uses less digits than its factorization.

533739640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2525 (or 2521 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 40.

The square root of 533739640 is about 23102.8058901944. The cubic root of 533739640 is about 811.1661504043.

The spelling of 533739640 in words is "five hundred thirty-three million, seven hundred thirty-nine thousand, six hundred forty".