428709155 has 16 divisors (see below), whose sum is σ = 588867840. Its totient is φ = 293510112.

The previous prime is 428709143. The next prime is 428709181. The reversal of 428709155 is 551907824.

It is not a de Polignac number, because 428709155 - 2⁶ = 428709091 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, 13772 + ... + 32358.

It is an arithmetic number, because the mean of its divisors is an integer number (36804240).

Almost surely, 2^428709155 is an apocalyptic number.

428709155 is a deficient number, since it is larger than the sum of its proper divisors (160158685).

428709155 is a wasteful number, since it uses less digits than its factorization.

428709155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19258.

The product of its (nonzero) digits is 100800, while the sum is 41.

The square root of 428709155 is about 20705.2929223423. The cubic root of 428709155 is about 754.0281957480.

It can be divided in two parts, 42870 and 9155, that added together give a palindrome (52025).

The spelling of 428709155 in words is "four hundred twenty-eight million, seven hundred nine thousand, one hundred fifty-five".