16465000 has 80 divisors (see below), whose sum is σ = 40065300. Its totient is φ = 6336000.

The previous prime is 16464989. The next prime is 16465003. The reversal of 16465000 is 56461.

It can be written as a sum of positive squares in 10 ways, for example, as 799236 + 15665764 = 894^2 + 3958^2 .

It is not an unprimeable number, because it can be changed into a prime (16465003) 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, 184956 + ... + 185044.

Almost surely, 2^16465000 is an apocalyptic number.

16465000 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 16465000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20032650).

16465000 is an abundant number, since it is smaller than the sum of its proper divisors (23600300).

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

16465000 is an equidigital number, since it uses as much as digits as its factorization.

16465000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152 (or 133 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 16465000 is about 4057.7087130547. The cubic root of 16465000 is about 254.4020334608.

The spelling of 16465000 in words is "sixteen million, four hundred sixty-five thousand".