28834155 has 48 divisors (see below), whose sum is σ = 57507840. Its totient is φ = 13091904.

The previous prime is 28834139. The next prime is 28834163. The reversal of 28834155 is 55143882.

It is a happy number.

It is not a de Polignac number, because 28834155 - 2⁴ = 28834139 is a prime.

Its product of digits (38400) is a multiple of the sum of its prime factors (640).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 75094 + ... + 75476.

It is an arithmetic number, because the mean of its divisors is an integer number (1198080).

Almost surely, 2^28834155 is an apocalyptic number.

28834155 is a deficient number, since it is larger than the sum of its proper divisors (28673685).

28834155 is a wasteful number, since it uses less digits than its factorization.

28834155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640 (or 637 counting only the distinct ones).

The product of its digits is 38400, while the sum is 36.

The square root of 28834155 is about 5369.7444073252. The cubic root of 28834155 is about 306.6448977669.

It can be divided in two parts, 288 and 34155, that added together give a palindrome (34443).

The spelling of 28834155 in words is "twenty-eight million, eight hundred thirty-four thousand, one hundred fifty-five".