535691988 has 192 divisors, whose sum is σ = 1595220480. Its totient is φ = 154192896.

The previous prime is 535691983. The next prime is 535692071. The reversal of 535691988 is 889196535.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (535691983) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1711320 + ... + 1711632.

It is an arithmetic number, because the mean of its divisors is an integer number (8308440).

Almost surely, 2^535691988 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 535691988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (797610240).

535691988 is an abundant number, since it is smaller than the sum of its proper divisors (1059528492).

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

535691988 is a wasteful number, since it uses less digits than its factorization.

535691988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415 (or 407 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 54.

The square root of 535691988 is about 23145.0208036199. The cubic root of 535691988 is about 812.1539925693.

It can be divided in two parts, 5356 and 91988, that added together give a square (97344 = 312²).

The spelling of 535691988 in words is "five hundred thirty-five million, six hundred ninety-one thousand, nine hundred eighty-eight".