16427556 has 48 divisors (see below), whose sum is σ = 43751680. Its totient is φ = 5326560.

The previous prime is 16427527. The next prime is 16427557. The reversal of 16427556 is 65572461.

It is a happy number.

16427556 is a `hidden beast` number, since 1 + 642 + 7 + 5 + 5 + 6 = 666.

16427556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×16427556² = 539729192266272, which contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 16427556.

It is not an unprimeable number, because it can be changed into a prime (16427557) 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, 1941 + ... + 6051.

Almost surely, 2^16427556 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16427556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21875840).

16427556 is an abundant number, since it is smaller than the sum of its proper divisors (27324124).

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

16427556 is a wasteful number, since it uses less digits than its factorization.

16427556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4161 (or 4153 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 16427556 is about 4053.0921529124. The cubic root of 16427556 is about 254.2090370045.

The spelling of 16427556 in words is "sixteen million, four hundred twenty-seven thousand, five hundred fifty-six".