28154330 has 16 divisors (see below), whose sum is σ = 50817024. Its totient is φ = 11230800.

The previous prime is 28154303. The next prime is 28154341. The reversal of 28154330 is 3345182.

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 28154330.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155 + ... + 7505.

It is an arithmetic number, because the mean of its divisors is an integer number (3176064).

Almost surely, 2^28154330 is an apocalyptic number.

28154330 is a deficient number, since it is larger than the sum of its proper divisors (22662694).

28154330 is a wasteful number, since it uses less digits than its factorization.

28154330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7741.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 28154330 is about 5306.0653972600. The cubic root of 28154330 is about 304.2157762285.

The spelling of 28154330 in words is "twenty-eight million, one hundred fifty-four thousand, three hundred thirty".