28623959 has 8 divisors (see below), whose sum is σ = 35229600. Its totient is φ = 22647456.

The previous prime is 28623949. The next prime is 28623979. The reversal of 28623959 is 95932682.

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

It is a de Polignac number, because none of the positive numbers 2^k-28623959 is a prime.

It is a super-3 number, since 3×28623959³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28623919) 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, 157184 + ... + 157365.

It is an arithmetic number, because the mean of its divisors is an integer number (4403700).

Almost surely, 2^28623959 is an apocalyptic number.

28623959 is a deficient number, since it is larger than the sum of its proper divisors (6605641).

28623959 is a wasteful number, since it uses less digits than its factorization.

28623959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314569.

The product of its digits is 233280, while the sum is 44.

The square root of 28623959 is about 5350.1363534026. The cubic root of 28623959 is about 305.8979503642.

The spelling of 28623959 in words is "twenty-eight million, six hundred twenty-three thousand, nine hundred fifty-nine".