14002780 has 24 divisors (see below), whose sum is σ = 32079600. Its totient is φ = 5091840.

The previous prime is 14002777. The next prime is 14002789. The reversal of 14002780 is 8720041.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14002789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31605 + ... + 32044.

It is an arithmetic number, because the mean of its divisors is an integer number (1336650).

Almost surely, 2^14002780 is an apocalyptic number.

14002780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

14002780 is an abundant number, since it is smaller than the sum of its proper divisors (18076820).

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

14002780 is a wasteful number, since it uses less digits than its factorization.

14002780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63669 (or 63667 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 14002780 is about 3742.0288614601. The cubic root of 14002780 is about 241.0301782081.

The spelling of 14002780 in words is "fourteen million, two thousand, seven hundred eighty".