13987458 has 32 divisors (see below), whose sum is σ = 32721600. Its totient is φ = 4416768.

The previous prime is 13987453. The next prime is 13987459. The reversal of 13987458 is 85478931.

13987458 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (13987453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5791 + ... + 7842.

It is an arithmetic number, because the mean of its divisors is an integer number (1022550).

Almost surely, 2^13987458 is an apocalyptic number.

13987458 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13987458 is an abundant number, since it is smaller than the sum of its proper divisors (18734142).

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

13987458 is a wasteful number, since it uses less digits than its factorization.

13987458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13663 (or 13657 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 13987458 is about 3739.9810159946. The cubic root of 13987458 is about 240.9422334760.

It can be divided in two parts, 13987 and 458, that multiplied together give a palindrome (6406046).

The spelling of 13987458 in words is "thirteen million, nine hundred eighty-seven thousand, four hundred fifty-eight".