16045040 has 40 divisors (see below), whose sum is σ = 40698288. Its totient is φ = 5834240.

The previous prime is 16045039. The next prime is 16045049. The reversal of 16045040 is 4054061.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16045049) 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, 8237 + ... + 9996.

Almost surely, 2^16045040 is an apocalyptic number.

16045040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16045040 is an abundant number, since it is smaller than the sum of its proper divisors (24653248).

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

16045040 is a wasteful number, since it uses less digits than its factorization.

16045040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18257 (or 18251 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 16045040 is about 4005.6260434544. The cubic root of 16045040 is about 252.2204336446.

The spelling of 16045040 in words is "sixteen million, forty-five thousand, forty".