16421076 has 144 divisors (see below), whose sum is σ = 51710400. Its totient is φ = 4487616.

The previous prime is 16421071. The next prime is 16421087. The reversal of 16421076 is 67012461.

16421076 is a `hidden beast` number, since 1 + 642 + 10 + 7 + 6 = 666.

16421076 is digitally balanced in base 2, base 4 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

16421076 is strictly pandigital in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16421071) 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, 153415 + ... + 153521.

It is an arithmetic number, because the mean of its divisors is an integer number (359100).

Almost surely, 2^16421076 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 16421076, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25855200).

16421076 is an abundant number, since it is smaller than the sum of its proper divisors (35289324).

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

16421076 is a wasteful number, since it uses less digits than its factorization.

16421076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163 (or 148 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 16421076 is about 4052.2926843948. The cubic root of 16421076 is about 254.1756075806.

The spelling of 16421076 in words is "sixteen million, four hundred twenty-one thousand, seventy-six".