428155 has 16 divisors (see below), whose sum is σ = 633024. Its totient is φ = 270720.

The previous prime is 428149. The next prime is 428161. The reversal of 428155 is 551824.

It is an interprime number because it is at equal distance from previous prime (428149) and next prime (428161).

It is not a de Polignac number, because 428155 - 2³ = 428147 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, 16 + ... + 925.

It is an arithmetic number, because the mean of its divisors is an integer number (39564).

2⁴²⁸¹⁵⁵ is an apocalyptic number.

428155 is a deficient number, since it is larger than the sum of its proper divisors (204869).

428155 is a wasteful number, since it uses less digits than its factorization.

428155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 966.

The product of its digits is 1600, while the sum is 25.

The square root of 428155 is about 654.3355408351. The cubic root of 428155 is about 75.3703166795.

Adding to 428155 its reverse (551824), we get a palindrome (979979).

The spelling of 428155 in words is "four hundred twenty-eight thousand, one hundred fifty-five".