28420654 has 8 divisors (see below), whose sum is σ = 43353720. Its totient is φ = 13969416.

The previous prime is 28420649. The next prime is 28420669. The reversal of 28420654 is 45602482.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120309 + ... + 120544.

It is an arithmetic number, because the mean of its divisors is an integer number (5419215).

Almost surely, 2^28420654 is an apocalyptic number.

28420654 is a deficient number, since it is larger than the sum of its proper divisors (14933066).

28420654 is a wasteful number, since it uses less digits than its factorization.

28420654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240914.

The product of its (nonzero) digits is 15360, while the sum is 31.

The square root of 28420654 is about 5331.1025126141. The cubic root of 28420654 is about 305.1720036707.

The spelling of 28420654 in words is "twenty-eight million, four hundred twenty thousand, six hundred fifty-four".