16407648 has 72 divisors (see below), whose sum is σ = 48707568. Its totient is φ = 5229312.

The previous prime is 16407641. The next prime is 16407673. The reversal of 16407648 is 84670461.

16407648 is a `hidden beast` number, since 1 + 6 + 4 + 0 + 7 + 648 = 666.

16407648 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 tau number, because it is divible by the number of its divisors (72).

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 (16407641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5386 + ... + 7862.

It is an arithmetic number, because the mean of its divisors is an integer number (676494).

Almost surely, 2^16407648 is an apocalyptic number.

16407648 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 16407648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24353784).

16407648 is an abundant number, since it is smaller than the sum of its proper divisors (32299920).

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

16407648 is a wasteful number, since it uses less digits than its factorization.

16407648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2516 (or 2505 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 16407648 is about 4050.6355056954. The cubic root of 16407648 is about 254.1063063809.

The spelling of 16407648 in words is "sixteen million, four hundred seven thousand, six hundred forty-eight".