16465440 has 48 divisors (see below), whose sum is σ = 51867648. Its totient is φ = 4390656.

The previous prime is 16465439. The next prime is 16465441. The reversal of 16465440 is 4456461.

It is an interprime number because it is at equal distance from previous prime (16465439) and next prime (16465441).

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×16465440² = 542221428787200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 16465398 and 16465407.

It is not an unprimeable number, because it can be changed into a prime (16465441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16672 + ... + 17631.

It is an arithmetic number, because the mean of its divisors is an integer number (1080576).

Almost surely, 2^16465440 is an apocalyptic number.

16465440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16465440 is an abundant number, since it is smaller than the sum of its proper divisors (35402208).

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

16465440 is a wasteful number, since it uses less digits than its factorization.

16465440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34321 (or 34313 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 16465440 is about 4057.7629304828. The cubic root of 16465440 is about 254.4042995990.

The spelling of 16465440 in words is "sixteen million, four hundred sixty-five thousand, four hundred forty".