28354555 has 32 divisors (see below), whose sum is σ = 38525760. Its totient is φ = 19906560.

The previous prime is 28354549. The next prime is 28354559. The reversal of 28354555 is 55545382.

It is a happy number.

It is not a de Polignac number, because 28354555 - 2⁷ = 28354427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28354559) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 156565 + ... + 156745.

It is an arithmetic number, because the mean of its divisors is an integer number (1203930).

Almost surely, 2^28354555 is an apocalyptic number.

28354555 is a deficient number, since it is larger than the sum of its proper divisors (10171205).

28354555 is a wasteful number, since it uses less digits than its factorization.

28354555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319.

The product of its digits is 120000, while the sum is 37.

The square root of 28354555 is about 5324.8995295686. The cubic root of 28354555 is about 304.9352366299.

The spelling of 28354555 in words is "twenty-eight million, three hundred fifty-four thousand, five hundred fifty-five".