16465940 has 24 divisors (see below), whose sum is σ = 34833120. Its totient is φ = 6537888.

The previous prime is 16465921. The next prime is 16465949. The reversal of 16465940 is 4956461.

It is a super-2 number, since 2×16465940² = 542254360167200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16465940.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16465949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182 + ... + 5741.

It is an arithmetic number, because the mean of its divisors is an integer number (1451380).

Almost surely, 2^16465940 is an apocalyptic number.

16465940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16465940 is an abundant number, since it is smaller than the sum of its proper divisors (18367180).

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

16465940 is a wasteful number, since it uses less digits than its factorization.

16465940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6071 (or 6069 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 16465940 is about 4057.8245403171. The cubic root of 16465940 is about 254.4068747071.

The spelling of 16465940 in words is "sixteen million, four hundred sixty-five thousand, nine hundred forty".