16429520 has 40 divisors (see below), whose sum is σ = 39138120. Its totient is φ = 6410240.

The previous prime is 16429519. The next prime is 16429559. The reversal of 16429520 is 2592461.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 10816 + 16418704 = 104^2 + 4052^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 776 + ... + 5784.

It is an arithmetic number, because the mean of its divisors is an integer number (978453).

Almost surely, 2^16429520 is an apocalyptic number.

16429520 is a gapful number since it is divisible by the number (10) 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 16429520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19569060).

16429520 is an abundant number, since it is smaller than the sum of its proper divisors (22708600).

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

16429520 is a wasteful number, since it uses less digits than its factorization.

16429520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5063 (or 5057 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 16429520 is about 4053.3344298244. The cubic root of 16429520 is about 254.2191672729.

The spelling of 16429520 in words is "sixteen million, four hundred twenty-nine thousand, five hundred twenty".