14987881 has 4 divisors (see below), whose sum is σ = 15639552. Its totient is φ = 14336212.

The previous prime is 14987879. The next prime is 14987893. The reversal of 14987881 is 18878941.

14987881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is the 1581-st star number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18878941 = 1423 ⋅13267.

It is a cyclic number.

It is not a de Polignac number, because 14987881 - 2¹ = 14987879 is a prime.

It is a super-2 number, since 2×14987881² = 449273153740322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14987851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 325801 + ... + 325846.

It is an arithmetic number, because the mean of its divisors is an integer number (3909888).

Almost surely, 2^14987881 is an apocalyptic number.

14987881 is the 2449-th centered pentagonal number.

It is an amenable number.

14987881 is a deficient number, since it is larger than the sum of its proper divisors (651671).

14987881 is an equidigital number, since it uses as much as digits as its factorization.

14987881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651670.

The product of its digits is 129024, while the sum is 46.

The square root of 14987881 is about 3871.4184738930. The cubic root of 14987881 is about 246.5547717066.

The spelling of 14987881 in words is "fourteen million, nine hundred eighty-seven thousand, eight hundred eighty-one".