14166640 has 40 divisors (see below), whose sum is σ = 33488928. Its totient is φ = 5571840.

The previous prime is 14166637. The next prime is 14166653. The reversal of 14166640 is 4666141.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 14166599 and 14166608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3429 + ... + 6331.

Almost surely, 2^14166640 is an apocalyptic number.

14166640 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 14166640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16744464).

14166640 is an abundant number, since it is smaller than the sum of its proper divisors (19322288).

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

14166640 is a wasteful number, since it uses less digits than its factorization.

14166640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2977 (or 2971 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 14166640 is about 3763.8597210842. The cubic root of 14166640 is about 241.9667098984.

The spelling of 14166640 in words is "fourteen million, one hundred sixty-six thousand, six hundred forty".