28552615 has 16 divisors (see below), whose sum is σ = 42170688. Its totient is φ = 18072576.

The previous prime is 28552607. The next prime is 28552619. The reversal of 28552615 is 51625582.

It is a cyclic number.

It is not a de Polignac number, because 28552615 - 2³ = 28552607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28552619) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30922 + ... + 31831.

It is an arithmetic number, because the mean of its divisors is an integer number (2635668).

Almost surely, 2^28552615 is an apocalyptic number.

28552615 is a deficient number, since it is larger than the sum of its proper divisors (13618073).

28552615 is a wasteful number, since it uses less digits than its factorization.

28552615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62778.

The product of its digits is 24000, while the sum is 34.

The square root of 28552615 is about 5343.4646999863. The cubic root of 28552615 is about 305.6435930464.

It can be divided in two parts, 285 and 52615, that added together give a square (52900 = 230²).

The spelling of 28552615 in words is "twenty-eight million, five hundred fifty-two thousand, six hundred fifteen".