428995 has 24 divisors (see below), whose sum is σ = 640224. Its totient is φ = 274176.

The previous prime is 428977. The next prime is 429007. The reversal of 428995 is 599824.

It is not a de Polignac number, because 428995 - 2¹³ = 420803 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4114 + ... + 4216.

It is an arithmetic number, because the mean of its divisors is an integer number (26676).

2⁴²⁸⁹⁹⁵ is an apocalyptic number.

428995 is a deficient number, since it is larger than the sum of its proper divisors (211229).

428995 is a wasteful number, since it uses less digits than its factorization.

428995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139 (or 132 counting only the distinct ones).

The product of its digits is 25920, while the sum is 37.

The square root of 428995 is about 654.9770988363. The cubic root of 428995 is about 75.4195743141.

The spelling of 428995 in words is "four hundred twenty-eight thousand, nine hundred ninety-five".