28148454 has 36 divisors (see below), whose sum is σ = 62003916. Its totient is φ = 9228936.

The previous prime is 28148437. The next prime is 28148489. The reversal of 28148454 is 45484182.

It is a congruent number.

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 123889 + ... + 124115.

It is an arithmetic number, because the mean of its divisors is an integer number (1722331).

Almost surely, 2^28148454 is an apocalyptic number.

28148454 is an abundant number, since it is smaller than the sum of its proper divisors (33855462).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28148454 is a wasteful number, since it uses less digits than its factorization.

28148454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401 (or 315 counting only the distinct ones).

The product of its digits is 40960, while the sum is 36.

The square root of 28148454 is about 5305.5116624130. The cubic root of 28148454 is about 304.1946107894.

The spelling of 28148454 in words is "twenty-eight million, one hundred forty-eight thousand, four hundred fifty-four".