523156984 has 64 divisors (see below), whose sum is σ = 1178942400. Its totient is φ = 212889600.

The previous prime is 523156981. The next prime is 523156993. The reversal of 523156984 is 489651325.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 523156984.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523156981) 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, 96424 + ... + 101704.

It is an arithmetic number, because the mean of its divisors is an integer number (18420975).

Almost surely, 2^523156984 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 523156984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (589471200).

523156984 is an abundant number, since it is smaller than the sum of its proper divisors (655785416).

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

523156984 is a wasteful number, since it uses less digits than its factorization.

523156984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5384 (or 5380 counting only the distinct ones).

The product of its digits is 259200, while the sum is 43.

The square root of 523156984 is about 22872.6252100628. The cubic root of 523156984 is about 805.7692242198.

The spelling of 523156984 in words is "five hundred twenty-three million, one hundred fifty-six thousand, nine hundred eighty-four".