16366840 has 32 divisors (see below), whose sum is σ = 42086880. Its totient is φ = 5611392.

The previous prime is 16366837. The next prime is 16366841. The reversal of 16366840 is 4866361.

It is a junction number, because it is equal to n+sod(n) for n = 16366796 and 16366805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16366841) 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, 28947 + ... + 29506.

It is an arithmetic number, because the mean of its divisors is an integer number (1315215).

Almost surely, 2^16366840 is an apocalyptic number.

16366840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16366840 is an abundant number, since it is smaller than the sum of its proper divisors (25720040).

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

16366840 is a wasteful number, since it uses less digits than its factorization.

16366840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58471 (or 58467 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 16366840 is about 4045.5951354529. The cubic root of 16366840 is about 253.8954661093.

The spelling of 16366840 in words is "sixteen million, three hundred sixty-six thousand, eight hundred forty".