28513079 has 8 divisors (see below), whose sum is σ = 32782848. Its totient is φ = 24292440.

The previous prime is 28513057. The next prime is 28513109. The reversal of 28513079 is 97031582.

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 28513079 - 2¹⁶ = 28447543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28513279) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11027 + ... + 13364.

It is an arithmetic number, because the mean of its divisors is an integer number (4097856).

Almost surely, 2^28513079 is an apocalyptic number.

28513079 is a deficient number, since it is larger than the sum of its proper divisors (4269769).

28513079 is a wasteful number, since it uses less digits than its factorization.

28513079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24565.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 28513079 is about 5339.7639460935. The cubic root of 28513079 is about 305.5024558650.

The spelling of 28513079 in words is "twenty-eight million, five hundred thirteen thousand, seventy-nine".