16393040 has 20 divisors (see below), whose sum is σ = 38114004. Its totient is φ = 6557184.

The previous prime is 16393037. The next prime is 16393051. The reversal of 16393040 is 4039361.

It can be written as a sum of positive squares in 2 ways, for example, as 8620096 + 7772944 = 2936^2 + 2788^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102377 + ... + 102536.

Almost surely, 2^16393040 is an apocalyptic number.

16393040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16393040 is an abundant number, since it is smaller than the sum of its proper divisors (21720964).

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

16393040 is a wasteful number, since it uses less digits than its factorization.

16393040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204926 (or 204920 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 16393040 is about 4048.8319303226. The cubic root of 16393040 is about 254.0308723092.

The spelling of 16393040 in words is "sixteen million, three hundred ninety-three thousand, forty".