28153478 has 16 divisors (see below), whose sum is σ = 44712000. Its totient is φ = 13258152.

The previous prime is 28153471. The next prime is 28153529. The reversal of 28153478 is 87435182.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28153471) 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 7 ways as a sum of consecutive naturals, for example, 4733 + ... + 8871.

It is an arithmetic number, because the mean of its divisors is an integer number (2794500).

Almost surely, 2^28153478 is an apocalyptic number.

28153478 is a deficient number, since it is larger than the sum of its proper divisors (16558522).

28153478 is a wasteful number, since it uses less digits than its factorization.

28153478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4339.

The product of its digits is 53760, while the sum is 38.

The square root of 28153478 is about 5305.9851111740. The cubic root of 28153478 is about 304.2127074944.

The spelling of 28153478 in words is "twenty-eight million, one hundred fifty-three thousand, four hundred seventy-eight".