28699545 has 24 divisors (see below), whose sum is σ = 53417664. Its totient is φ = 13119456.

The previous prime is 28699543. The next prime is 28699571. The reversal of 28699545 is 54599682.

It is not a de Polignac number, because 28699545 - 2¹ = 28699543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28699494 and 28699503.

It is not an unprimeable number, because it can be changed into a prime (28699543) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18789 + ... + 20258.

It is an arithmetic number, because the mean of its divisors is an integer number (2225736).

Almost surely, 2^28699545 is an apocalyptic number.

It is an amenable number.

28699545 is a deficient number, since it is larger than the sum of its proper divisors (24718119).

28699545 is a wasteful number, since it uses less digits than its factorization.

28699545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39069 (or 39062 counting only the distinct ones).

The product of its digits is 777600, while the sum is 48.

The square root of 28699545 is about 5357.1956283115. The cubic root of 28699545 is about 306.1669706887.

The spelling of 28699545 in words is "twenty-eight million, six hundred ninety-nine thousand, five hundred forty-five".