16471040 has 44 divisors (see below), whose sum is σ = 39523476. Its totient is φ = 6586368.

The previous prime is 16471033. The next prime is 16471057. The reversal of 16471040 is 4017461.

It can be written as a sum of positive squares in 2 ways, for example, as 10863616 + 5607424 = 3296^2 + 2368^2 .

It is a nialpdrome in base 8 and base 16.

It is a junction number, because it is equal to n+sod(n) for n = 16470997 and 16471015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3512 + ... + 6728.

Almost surely, 2^16471040 is an apocalyptic number.

16471040 is a gapful number since it is divisible by the number (10) 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 16471040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19761738).

16471040 is an abundant number, since it is smaller than the sum of its proper divisors (23052436).

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

16471040 is an equidigital number, since it uses as much as digits as its factorization.

16471040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3242 (or 3224 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 16471040 is about 4058.4529072049. The cubic root of 16471040 is about 254.4331378322.

The spelling of 16471040 in words is "sixteen million, four hundred seventy-one thousand, forty".