169381056 has 112 divisors (see below), whose sum is σ = 489305600. Its totient is φ = 51397632.

The previous prime is 169381033. The next prime is 169381061. The reversal of 169381056 is 650183961.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 196755 + ... + 197613.

It is an arithmetic number, because the mean of its divisors is an integer number (4368800).

Almost surely, 2^169381056 is an apocalyptic number.

169381056 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 169381056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (244652800).

169381056 is an abundant number, since it is smaller than the sum of its proper divisors (319924544).

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

169381056 is a wasteful number, since it uses less digits than its factorization.

169381056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 966 (or 956 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 169381056 is about 13014.6477478263. The cubic root of 169381056 is about 553.2927064896.

The spelling of 169381056 in words is "one hundred sixty-nine million, three hundred eighty-one thousand, fifty-six".