28477870 has 8 divisors (see below), whose sum is σ = 51260184. Its totient is φ = 11391144.

The previous prime is 28477853. The next prime is 28477879. The reversal of 28477870 is 7877482.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28477879) by changing a digit.

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, 1423884 + ... + 1423903.

It is an arithmetic number, because the mean of its divisors is an integer number (6407523).

Almost surely, 2^28477870 is an apocalyptic number.

28477870 is a deficient number, since it is larger than the sum of its proper divisors (22782314).

28477870 is a wasteful number, since it uses less digits than its factorization.

28477870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2847794.

The product of its (nonzero) digits is 175616, while the sum is 43.

The square root of 28477870 is about 5336.4660591069. The cubic root of 28477870 is about 305.3766555087.

The spelling of 28477870 in words is "twenty-eight million, four hundred seventy-seven thousand, eight hundred seventy".