28677755 has 8 divisors (see below), whose sum is σ = 35145792. Its totient is φ = 22453888.

The previous prime is 28677739. The next prime is 28677767. The reversal of 28677755 is 55777682.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 28677755 - 2⁴ = 28677739 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60782 + ... + 61251.

It is an arithmetic number, because the mean of its divisors is an integer number (4393224).

Almost surely, 2^28677755 is an apocalyptic number.

28677755 is a deficient number, since it is larger than the sum of its proper divisors (6468037).

28677755 is a wasteful number, since it uses less digits than its factorization.

28677755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122085.

The product of its digits is 823200, while the sum is 47.

The square root of 28677755 is about 5355.1615288430. The cubic root of 28677755 is about 306.0894657735.

The spelling of 28677755 in words is "twenty-eight million, six hundred seventy-seven thousand, seven hundred fifty-five".