428173101 has 16 divisors (see below), whose sum is σ = 671644800. Its totient is φ = 268657344.

The previous prime is 428173073. The next prime is 428173103. The reversal of 428173101 is 101371824.

It is not a de Polignac number, because 428173101 - 2¹⁰ = 428172077 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428173103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 465961 + ... + 466878.

It is an arithmetic number, because the mean of its divisors is an integer number (41977800).

Almost surely, 2^428173101 is an apocalyptic number.

It is an amenable number.

428173101 is a deficient number, since it is larger than the sum of its proper divisors (243471699).

428173101 is a wasteful number, since it uses less digits than its factorization.

428173101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 932865 (or 932859 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 428173101 is about 20692.3440189844. The cubic root of 428173101 is about 753.7137880180.

The spelling of 428173101 in words is "four hundred twenty-eight million, one hundred seventy-three thousand, one hundred one".