169729456 has 40 divisors (see below), whose sum is σ = 355289760. Its totient is φ = 78084096.

The previous prime is 169729429. The next prime is 169729457. The reversal of 169729456 is 654927961.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (169729457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73536 + ... + 75808.

It is an arithmetic number, because the mean of its divisors is an integer number (8882244).

Almost surely, 2^169729456 is an apocalyptic number.

169729456 is a gapful number since it is divisible by the number (16) 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 169729456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177644880).

169729456 is an abundant number, since it is smaller than the sum of its proper divisors (185560304).

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

169729456 is a wasteful number, since it uses less digits than its factorization.

169729456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2653 (or 2647 counting only the distinct ones).

The product of its digits is 816480, while the sum is 49.

The square root of 169729456 is about 13028.0257905793. The cubic root of 169729456 is about 553.6718027252.

The spelling of 169729456 in words is "one hundred sixty-nine million, seven hundred twenty-nine thousand, four hundred fifty-six".