16211940 has 48 divisors (see below), whose sum is σ = 47785920. Its totient is φ = 4095360.

The previous prime is 16211929. The next prime is 16211947. The reversal of 16211940 is 4911261.

It is a self number, because there is not a number n which added to its sum of digits gives 16211940.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16211947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5971 + ... + 8250.

It is an arithmetic number, because the mean of its divisors is an integer number (995540).

Almost surely, 2^16211940 is an apocalyptic number.

16211940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16211940 is an abundant number, since it is smaller than the sum of its proper divisors (31573980).

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

16211940 is a wasteful number, since it uses less digits than its factorization.

16211940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14252 (or 14250 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 16211940 is about 4026.4053447213. The cubic root of 16211940 is about 253.0919484356.

The spelling of 16211940 in words is "sixteen million, two hundred eleven thousand, nine hundred forty".