16169472 has 180 divisors, whose sum is σ = 53063010. Its totient is φ = 4730880.

The previous prime is 16169471. The next prime is 16169473. The reversal of 16169472 is 27496161.

It is an interprime number because it is at equal distance from previous prime (16169471) and next prime (16169473).

It can be written as a sum of positive squares in only one way, i.e., 13660416 + 2509056 = 3696^2 + 1584^2 .

It is a super-2 number, since 2×16169472² = 522903649517568, which contains 22 as substring.

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

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (16169471) by changing a digit.

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 17 ways as a sum of consecutive naturals, for example, 557554 + ... + 557582.

Almost surely, 2^16169472 is an apocalyptic number.

16169472 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 16169472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26531505).

16169472 is an abundant number, since it is smaller than the sum of its proper divisors (36893538).

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

16169472 is a wasteful number, since it uses less digits than its factorization.

16169472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75 (or 45 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 16169472 is about 4021.1281998961. The cubic root of 16169472 is about 252.8707594478.

It can be divided in two parts, 16169 and 472, that added together give a square (16641 = 129²).

The spelling of 16169472 in words is "sixteen million, one hundred sixty-nine thousand, four hundred seventy-two".