428109190 has 8 divisors (see below), whose sum is σ = 770596560. Its totient is φ = 171243672.

The previous prime is 428109169. The next prime is 428109233. The reversal of 428109190 is 91901824.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×428109190² = 366554957124912200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21405450 + ... + 21405469.

It is an arithmetic number, because the mean of its divisors is an integer number (96324570).

Almost surely, 2^428109190 is an apocalyptic number.

428109190 is a deficient number, since it is larger than the sum of its proper divisors (342487370).

428109190 is a wasteful number, since it uses less digits than its factorization.

428109190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42810926.

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 428109190 is about 20690.7996462196. The cubic root of 428109190 is about 753.6762852738.

The spelling of 428109190 in words is "four hundred twenty-eight million, one hundred nine thousand, one hundred ninety".