28420614 has 48 divisors (see below), whose sum is σ = 64831104. Its totient is φ = 8994960.

The previous prime is 28420603. The next prime is 28420619. The reversal of 28420614 is 41602482.

28420614 is a `hidden beast` number, since 2 + 8 + 42 + 0 + 614 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28420619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 536212 + ... + 536264.

It is an arithmetic number, because the mean of its divisors is an integer number (1350648).

Almost surely, 2^28420614 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28420614, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32415552).

28420614 is an abundant number, since it is smaller than the sum of its proper divisors (36410490).

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

28420614 is an equidigital number, since it uses as much as digits as its factorization.

28420614 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154 (or 89 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 28420614 is about 5331.0987610435. The cubic root of 28420614 is about 305.1718605015.

The spelling of 28420614 in words is "twenty-eight million, four hundred twenty thousand, six hundred fourteen".