28551535 has 8 divisors (see below), whose sum is σ = 34295040. Its totient is φ = 22819104.

The previous prime is 28551521. The next prime is 28551553. The reversal of 28551535 is 53515582.

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 28551535 - 2⁵ = 28551503 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28551535.

It is a congruent 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, 4786 + ... + 8944.

It is an arithmetic number, because the mean of its divisors is an integer number (4286880).

Almost surely, 2^28551535 is an apocalyptic number.

28551535 is a deficient number, since it is larger than the sum of its proper divisors (5743505).

28551535 is a wasteful number, since it uses less digits than its factorization.

28551535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5537.

The product of its digits is 30000, while the sum is 34.

The square root of 28551535 is about 5343.3636410037. The cubic root of 28551535 is about 305.6397393510.

The spelling of 28551535 in words is "twenty-eight million, five hundred fifty-one thousand, five hundred thirty-five".