6529428 has 72 divisors (see below), whose sum is σ = 17926272. Its totient is φ = 1996032.

The previous prime is 6529423. The next prime is 6529463. The reversal of 6529428 is 8249256.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 6529392 and 6529401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6529423) 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, 28651 + ... + 28877.

It is an arithmetic number, because the mean of its divisors is an integer number (248976).

Almost surely, 2^6529428 is an apocalyptic number.

6529428 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6529428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8963136).

6529428 is an abundant number, since it is smaller than the sum of its proper divisors (11396844).

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

6529428 is a wasteful number, since it uses less digits than its factorization.

6529428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301 (or 296 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 6529428 is about 2555.2745449364. The cubic root of 6529428 is about 186.9067757661.

The spelling of 6529428 in words is "six million, five hundred twenty-nine thousand, four hundred twenty-eight".