15280155 has 24 divisors (see below), whose sum is σ = 28894320. Its totient is φ = 7408320.

The previous prime is 15280147. The next prime is 15280159. The reversal of 15280155 is 55108251.

It is not a de Polignac number, because 15280155 - 2³ = 15280147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15280159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14940 + ... + 15929.

It is an arithmetic number, because the mean of its divisors is an integer number (1203930).

Almost surely, 2^15280155 is an apocalyptic number.

15280155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

15280155 is a deficient number, since it is larger than the sum of its proper divisors (13614165).

15280155 is a wasteful number, since it uses less digits than its factorization.

15280155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30891 (or 30888 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 27.

The square root of 15280155 is about 3908.9838833129. The cubic root of 15280155 is about 248.1471280551.

The spelling of 15280155 in words is "fifteen million, two hundred eighty thousand, one hundred fifty-five".