16466940 has 108 divisors (see below), whose sum is σ = 58135896. Its totient is φ = 3761856.

The previous prime is 16466927. The next prime is 16466969. The reversal of 16466940 is 4966461.

16466940 is a `hidden beast` number, since 1 + 646 + 6 + 9 + 4 + 0 = 666.

It is a super-2 number, since 2×16466940² = 542320225927200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 16466895 and 16466904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 7887 + ... + 9753.

Almost surely, 2^16466940 is an apocalyptic number.

16466940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16466940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29067948).

16466940 is an abundant number, since it is smaller than the sum of its proper divisors (41668956).

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

16466940 is a wasteful number, since it uses less digits than its factorization.

16466940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1896 (or 1884 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 16466940 is about 4057.9477571797. The cubic root of 16466940 is about 254.4120247668.

The spelling of 16466940 in words is "sixteen million, four hundred sixty-six thousand, nine hundred forty".