28780153 has 8 divisors (see below), whose sum is σ = 30096000. Its totient is φ = 27469728.

The previous prime is 28780139. The next prime is 28780159. The reversal of 28780153 is 35108782.

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

It is not a de Polignac number, because 28780153 - 2¹³ = 28771961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28780159) 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, 12733 + ... + 14821.

It is an arithmetic number, because the mean of its divisors is an integer number (3762000).

Almost surely, 2^28780153 is an apocalyptic number.

28780153 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

28780153 is a deficient number, since it is larger than the sum of its proper divisors (1315847).

28780153 is a wasteful number, since it uses less digits than its factorization.

28780153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2711.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 28780153 is about 5364.7136922673. The cubic root of 28780153 is about 306.4533450023.

The spelling of 28780153 in words is "twenty-eight million, seven hundred eighty thousand, one hundred fifty-three".