28799655 has 16 divisors (see below), whose sum is σ = 46366080. Its totient is φ = 15264288.

The previous prime is 28799633. The next prime is 28799669. The reversal of 28799655 is 55699782.

It is a happy number.

It is not a de Polignac number, because 28799655 - 2⁸ = 28799399 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28799598 and 28799607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3445 + ... + 8334.

It is an arithmetic number, because the mean of its divisors is an integer number (2897880).

Almost surely, 2^28799655 is an apocalyptic number.

28799655 is a deficient number, since it is larger than the sum of its proper divisors (17566425).

28799655 is a wasteful number, since it uses less digits than its factorization.

28799655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11950.

The product of its digits is 1360800, while the sum is 51.

The square root of 28799655 is about 5366.5310024261. The cubic root of 28799655 is about 306.5225489861.

The spelling of 28799655 in words is "twenty-eight million, seven hundred ninety-nine thousand, six hundred fifty-five".