28014681 has 8 divisors (see below), whose sum is σ = 37530784. Its totient is φ = 18587520.

The previous prime is 28014659. The next prime is 28014689. The reversal of 28014681 is 18641082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28014681 - 2⁶ = 28014617 is a prime.

It is a super-2 number, since 2×28014681² = 1569644703063522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28014689) 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, 21496 + ... + 22761.

It is an arithmetic number, because the mean of its divisors is an integer number (4691348).

Almost surely, 2^28014681 is an apocalyptic number.

It is an amenable number.

28014681 is a deficient number, since it is larger than the sum of its proper divisors (9516103).

28014681 is a wasteful number, since it uses less digits than its factorization.

28014681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44471.

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 28014681 is about 5292.8896644461. The cubic root of 28014681 is about 303.7119595370.

The spelling of 28014681 in words is "twenty-eight million, fourteen thousand, six hundred eighty-one".