28555119 has 16 divisors (see below), whose sum is σ = 44531200. Its totient is φ = 18034488.

The previous prime is 28555117. The next prime is 28555127. The reversal of 28555119 is 91155582.

It is a happy number.

It is not a de Polignac number, because 28555119 - 2¹ = 28555117 is a prime.

It is a super-2 number, since 2×28555119² = 1630789642208322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28555117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27319 + ... + 28344.

It is an arithmetic number, because the mean of its divisors is an integer number (2783200).

Almost surely, 2^28555119 is an apocalyptic number.

28555119 is a deficient number, since it is larger than the sum of its proper divisors (15976081).

28555119 is a wasteful number, since it uses less digits than its factorization.

28555119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55691 (or 55685 counting only the distinct ones).

The product of its digits is 18000, while the sum is 36.

The square root of 28555119 is about 5343.6989997566. The cubic root of 28555119 is about 305.6525275367.

The spelling of 28555119 in words is "twenty-eight million, five hundred fifty-five thousand, one hundred nineteen".