28862155 has 16 divisors (see below), whose sum is σ = 40549824. Its totient is φ = 19307520.

The previous prime is 28862149. The next prime is 28862161. The reversal of 28862155 is 55126882.

It is an interprime number because it is at equal distance from previous prime (28862149) and next prime (28862161).

It is not a de Polignac number, because 28862155 - 2⁵ = 28862123 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8622 + ... + 11491.

It is an arithmetic number, because the mean of its divisors is an integer number (2534364).

Almost surely, 2^28862155 is an apocalyptic number.

28862155 is a deficient number, since it is larger than the sum of its proper divisors (11687669).

28862155 is a wasteful number, since it uses less digits than its factorization.

28862155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20166.

The product of its digits is 38400, while the sum is 37.

The square root of 28862155 is about 5372.3509751318. The cubic root of 28862155 is about 306.7441236030.

It can be divided in two parts, 2886 and 2155, that added together give a square (5041 = 71²).

The spelling of 28862155 in words is "twenty-eight million, eight hundred sixty-two thousand, one hundred fifty-five".