529749972 has 72 divisors (see below), whose sum is σ = 1388290176. Its totient is φ = 170210304.

The previous prime is 529749959. The next prime is 529749973. The reversal of 529749972 is 279947925.

529749972 is a `hidden beast` number, since 529 + 7 + 49 + 9 + 72 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (529749973) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 111028 + ... + 115700.

It is an arithmetic number, because the mean of its divisors is an integer number (19281808).

Almost surely, 2^529749972 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 529749972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (694145088).

529749972 is an abundant number, since it is smaller than the sum of its proper divisors (858540204).

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

529749972 is a wasteful number, since it uses less digits than its factorization.

529749972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4797 (or 4792 counting only the distinct ones).

The product of its digits is 2857680, while the sum is 54.

The square root of 529749972 is about 23016.2979647032. The cubic root of 529749972 is about 809.1399559132.

The spelling of 529749972 in words is "five hundred twenty-nine million, seven hundred forty-nine thousand, nine hundred seventy-two".