169493472 has 144 divisors (see below), whose sum is σ = 508540032. Its totient is φ = 55520640.

The previous prime is 169493449. The next prime is 169493483. The reversal of 169493472 is 274394961.

It is a happy number.

169493472 is a `hidden beast` number, since 1 + 6 + 94 + 93 + 472 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×169493472² = 57456074101229568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 551943 + ... + 552249.

It is an arithmetic number, because the mean of its divisors is an integer number (3531528).

Almost surely, 2^169493472 is an apocalyptic number.

169493472 is a gapful number since it is divisible by the number (12) 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 169493472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254270016).

169493472 is an abundant number, since it is smaller than the sum of its proper divisors (339046560).

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

169493472 is an equidigital number, since it uses as much as digits as its factorization.

169493472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403 (or 383 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 169493472 is about 13018.9658575480. The cubic root of 169493472 is about 553.4150838070.

The spelling of 169493472 in words is "one hundred sixty-nine million, four hundred ninety-three thousand, four hundred seventy-two".