16666452 has 48 divisors (see below), whose sum is σ = 47140800. Its totient is φ = 5050080.

The previous prime is 16666423. The next prime is 16666453. The reversal of 16666452 is 25466661.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16666453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5827 + ... + 8202.

It is an arithmetic number, because the mean of its divisors is an integer number (982100).

Almost surely, 2^16666452 is an apocalyptic number.

16666452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16666452 is an abundant number, since it is smaller than the sum of its proper divisors (30474348).

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

16666452 is a wasteful number, since it uses less digits than its factorization.

16666452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14053 (or 14045 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 16666452 is about 4082.4566133641. The cubic root of 16666452 is about 255.4353807859.

It can be divided in two parts, 1666 and 6452, that added together give a palindrome (8118).

The spelling of 16666452 in words is "sixteen million, six hundred sixty-six thousand, four hundred fifty-two".