16699452 has 144 divisors (see below), whose sum is σ = 51480576. Its totient is φ = 4118400.

The previous prime is 16699451. The next prime is 16699477. The reversal of 16699452 is 25499661.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

Its product of digits (116640) is a multiple of the sum of its prime factors (120).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16699451) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 315058 + ... + 315110.

It is an arithmetic number, because the mean of its divisors is an integer number (357504).

Almost surely, 2^16699452 is an apocalyptic number.

16699452 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 16699452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25740288).

16699452 is an abundant number, since it is smaller than the sum of its proper divisors (34781124).

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

16699452 is a wasteful number, since it uses less digits than its factorization.

16699452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120 (or 107 counting only the distinct ones).

The product of its digits is 116640, while the sum is 42.

The square root of 16699452 is about 4086.4962987870. The cubic root of 16699452 is about 255.6038591603.

The spelling of 16699452 in words is "sixteen million, six hundred ninety-nine thousand, four hundred fifty-two".