14780438 has 4 divisors (see below), whose sum is σ = 22170660. Its totient is φ = 7390218.

The previous prime is 14780417. The next prime is 14780449. The reversal of 14780438 is 83408741.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×14780438² = 436922694943688, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 14780398 and 14780407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3695108 + ... + 3695111.

It is an arithmetic number, because the mean of its divisors is an integer number (5542665).

Almost surely, 2^14780438 is an apocalyptic number.

14780438 is a deficient number, since it is larger than the sum of its proper divisors (7390222).

14780438 is an equidigital number, since it uses as much as digits as its factorization.

14780438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7390221.

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 14780438 is about 3844.5335217683. The cubic root of 14780438 is about 245.4119848807.

The spelling of 14780438 in words is "fourteen million, seven hundred eighty thousand, four hundred thirty-eight".