14428515 has 32 divisors (see below), whose sum is σ = 24494400. Its totient is φ = 7239680.

The previous prime is 14428511. The next prime is 14428537. The reversal of 14428515 is 51582441.

14428515 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 14428515 - 2² = 14428511 is a prime.

It is not an unprimeable number, because it can be changed into a prime (14428511) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17431 + ... + 18239.

It is an arithmetic number, because the mean of its divisors is an integer number (765450).

Almost surely, 2^14428515 is an apocalyptic number.

14428515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

14428515 is a deficient number, since it is larger than the sum of its proper divisors (10065885).

14428515 is a wasteful number, since it uses less digits than its factorization.

14428515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887.

The product of its digits is 6400, while the sum is 30.

The square root of 14428515 is about 3798.4885151860. The cubic root of 14428515 is about 243.4485609685.

The spelling of 14428515 in words is "fourteen million, four hundred twenty-eight thousand, five hundred fifteen".