16433940 has 24 divisors (see below), whose sum is σ = 46015200. Its totient is φ = 4382368.

The previous prime is 16433909. The next prime is 16433941. The reversal of 16433940 is 4933461.

16433940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 = 16433898 and 16433907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16433941) 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, 136890 + ... + 137009.

It is an arithmetic number, because the mean of its divisors is an integer number (1917300).

Almost surely, 2^16433940 is an apocalyptic number.

16433940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16433940 is an abundant number, since it is smaller than the sum of its proper divisors (29581260).

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

16433940 is a wasteful number, since it uses less digits than its factorization.

16433940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273911 (or 273909 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 16433940 is about 4053.8796232745. The cubic root of 16433940 is about 254.2419625822.

The spelling of 16433940 in words is "sixteen million, four hundred thirty-three thousand, nine hundred forty".