428076101 has 4 divisors (see below), whose sum is σ = 435093804. Its totient is φ = 421058400.

The previous prime is 428076083. The next prime is 428076107. The reversal of 428076101 is 101670824.

It is a Cunningham number, because it is equal to 20690²+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13912900 + 414163201 = 3730^2 + 20351^2 .

It is a cyclic number.

It is not a de Polignac number, because 428076101 - 2⁶ = 428076037 is a prime.

It is a super-3 number, since 3×428076101³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428076107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3508760 + ... + 3508881.

It is an arithmetic number, because the mean of its divisors is an integer number (108773451).

Almost surely, 2^428076101 is an apocalyptic number.

It is an amenable number.

428076101 is a deficient number, since it is larger than the sum of its proper divisors (7017703).

428076101 is an equidigital number, since it uses as much as digits as its factorization.

428076101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7017702.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 428076101 is about 20690.0000241663. Note that the first 4 decimals coincide. The cubic root of 428076101 is about 753.6568673015.

The spelling of 428076101 in words is "four hundred twenty-eight million, seventy-six thousand, one hundred one".