28277051 has 8 divisors (see below), whose sum is σ = 32189184. Its totient is φ = 24588520.

The previous prime is 28277017. The next prime is 28277057. The reversal of 28277051 is 15077282.

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

It is a de Polignac number, because none of the positive numbers 2^k-28277051 is a prime.

It is a super-2 number, since 2×28277051² = 1599183226513202, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28276999 and 28277017.

It is not an unprimeable number, because it can be changed into a prime (28277057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55631 + ... + 56136.

It is an arithmetic number, because the mean of its divisors is an integer number (4023648).

Almost surely, 2^28277051 is an apocalyptic number.

28277051 is a deficient number, since it is larger than the sum of its proper divisors (3912133).

28277051 is a wasteful number, since it uses less digits than its factorization.

28277051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111801.

The product of its (nonzero) digits is 7840, while the sum is 32.

The square root of 28277051 is about 5317.6170414952. The cubic root of 28277051 is about 304.6571476633.

The spelling of 28277051 in words is "twenty-eight million, two hundred seventy-seven thousand, fifty-one".