28054051 has 4 divisors (see below), whose sum is σ = 29530600. Its totient is φ = 26577504.

The previous prime is 28054003. The next prime is 28054057. The reversal of 28054051 is 15045082.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 28054051 - 2¹⁹ = 27529763 is a prime.

It is a super-4 number, since 4×28054051⁴ (a number of 31 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28054057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 738246 + ... + 738283.

It is an arithmetic number, because the mean of its divisors is an integer number (7382650).

Almost surely, 2^28054051 is an apocalyptic number.

28054051 is a deficient number, since it is larger than the sum of its proper divisors (1476549).

28054051 is a wasteful number, since it uses less digits than its factorization.

28054051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1476548.

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 28054051 is about 5296.6074991451. The cubic root of 28054051 is about 303.8541652488.

The spelling of 28054051 in words is "twenty-eight million, fifty-four thousand, fifty-one".