14220740 has 24 divisors (see below), whose sum is σ = 31436160. Its totient is φ = 5388768.

The previous prime is 14220719. The next prime is 14220749. The reversal of 14220740 is 4702241.

14220740 = 283² + 284² + ... + 402².

It is a super-2 number, since 2×14220740² = 404458892295200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (14220749) 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, 18332 + ... + 19091.

It is an arithmetic number, because the mean of its divisors is an integer number (1309840).

Almost surely, 2^14220740 is an apocalyptic number.

14220740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

14220740 is an abundant number, since it is smaller than the sum of its proper divisors (17215420).

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

14220740 is a wasteful number, since it uses less digits than its factorization.

14220740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37451 (or 37449 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 14220740 is about 3771.0396444482. The cubic root of 14220740 is about 242.2743286169.

Adding to 14220740 its reverse (4702241), we get a palindrome (18922981).

The spelling of 14220740 in words is "fourteen million, two hundred twenty thousand, seven hundred forty".