28722153 has 8 divisors (see below), whose sum is σ = 38338816. Its totient is φ = 19126800.

The previous prime is 28722149. The next prime is 28722157. The reversal of 28722153 is 35122782.

It is an interprime number because it is at equal distance from previous prime (28722149) and next prime (28722157).

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

It is not a de Polignac number, because 28722153 - 2² = 28722149 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28722153.

It is not an unprimeable number, because it can be changed into a prime (28722157) 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, 1858 + ... + 7803.

It is an arithmetic number, because the mean of its divisors is an integer number (4792352).

Almost surely, 2^28722153 is an apocalyptic number.

It is an amenable number.

28722153 is a deficient number, since it is larger than the sum of its proper divisors (9616663).

28722153 is an equidigital number, since it uses as much as digits as its factorization.

28722153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10655.

The product of its digits is 6720, while the sum is 30.

The square root of 28722153 is about 5359.3052721412. The cubic root of 28722153 is about 306.2473436949.

The spelling of 28722153 in words is "twenty-eight million, seven hundred twenty-two thousand, one hundred fifty-three".