28513077 has 8 divisors (see below), whose sum is σ = 39670464. Its totient is φ = 18182208.

The previous prime is 28513057. The next prime is 28513109. The reversal of 28513077 is 77031582.

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

It is not a de Polignac number, because 28513077 - 2⁶ = 28513013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28513027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206548 + ... + 206685.

It is an arithmetic number, because the mean of its divisors is an integer number (4958808).

Almost surely, 2^28513077 is an apocalyptic number.

It is an amenable number.

28513077 is a deficient number, since it is larger than the sum of its proper divisors (11157387).

28513077 is a wasteful number, since it uses less digits than its factorization.

28513077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413259.

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 28513077 is about 5339.7637588193. The cubic root of 28513077 is about 305.5024487220.

The spelling of 28513077 in words is "twenty-eight million, five hundred thirteen thousand, seventy-seven".