16290040 has 32 divisors (see below), whose sum is σ = 39473280. Its totient is φ = 6014592.

The previous prime is 16290019. The next prime is 16290041. The reversal of 16290040 is 4009261.

16290040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 16289993 and 16290020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16290041) 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, 15144 + ... + 16183.

It is an arithmetic number, because the mean of its divisors is an integer number (1233540).

Almost surely, 2^16290040 is an apocalyptic number.

16290040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16290040 is an abundant number, since it is smaller than the sum of its proper divisors (23183240).

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

16290040 is a wasteful number, since it uses less digits than its factorization.

16290040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31351 (or 31347 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 16290040 is about 4036.0921694134. The cubic root of 16290040 is about 253.4977157197.

The spelling of 16290040 in words is "sixteen million, two hundred ninety thousand, forty".