28054430 has 8 divisors (see below), whose sum is σ = 50497992. Its totient is φ = 11221768.

The previous prime is 28054409. The next prime is 28054451. The reversal of 28054430 is 3445082.

It is an interprime number because it is at equal distance from previous prime (28054409) and next prime (28054451).

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

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 28054430.

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 3 ways as a sum of consecutive naturals, for example, 1402712 + ... + 1402731.

It is an arithmetic number, because the mean of its divisors is an integer number (6312249).

Almost surely, 2^28054430 is an apocalyptic number.

28054430 is a deficient number, since it is larger than the sum of its proper divisors (22443562).

28054430 is a wasteful number, since it uses less digits than its factorization.

28054430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2805450.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 28054430 is about 5296.6432766423. The cubic root of 28054430 is about 303.8555335623.

The spelling of 28054430 in words is "twenty-eight million, fifty-four thousand, four hundred thirty".