16621848 has 80 divisors (see below), whose sum is σ = 47175480. Its totient is φ = 5467392.

The previous prime is 16621841. The next prime is 16621849. The reversal of 16621848 is 84812661.

16621848 is digitally balanced in base 2 and base 4, 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 (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16621841) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 73111 + ... + 73337.

Almost surely, 2^16621848 is an apocalyptic number.

16621848 is a gapful number since it is divisible by the number (18) 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 16621848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23587740).

16621848 is an abundant number, since it is smaller than the sum of its proper divisors (30553632).

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

16621848 is a wasteful number, since it uses less digits than its factorization.

16621848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358 (or 345 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 16621848 is about 4076.9900662131. The cubic root of 16621848 is about 255.2073054712.

The spelling of 16621848 in words is "sixteen million, six hundred twenty-one thousand, eight hundred forty-eight".