28779153 has 8 divisors (see below), whose sum is σ = 41323968. Its totient is φ = 17710224.

The previous prime is 28779143. The next prime is 28779173. The reversal of 28779153 is 35197782.

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

It is not a de Polignac number, because 28779153 - 2⁴ = 28779137 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (28779103) 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, 368925 + ... + 369002.

It is an arithmetic number, because the mean of its divisors is an integer number (5165496).

Almost surely, 2^28779153 is an apocalyptic number.

It is an amenable number.

28779153 is a deficient number, since it is larger than the sum of its proper divisors (12544815).

28779153 is a wasteful number, since it uses less digits than its factorization.

28779153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737943.

The product of its digits is 105840, while the sum is 42.

The square root of 28779153 is about 5364.6204898390. The cubic root of 28779153 is about 306.4497956015.

The spelling of 28779153 in words is "twenty-eight million, seven hundred seventy-nine thousand, one hundred fifty-three".