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428487646 = 2673197669
BaseRepresentation
bin11001100010100…
…011001111011110
31002212021102112211
4121202203033132
51334143101041
6110303551034
713422041056
oct3142431736
91085242484
10428487646
111aa963124
12bb5bb47a
136aa070b2
1440c9c566
152793e481
hex198a33de

428487646 has 8 divisors (see below), whose sum is σ = 652324680. Its totient is φ = 211046088.

The previous prime is 428487643. The next prime is 428487671. The reversal of 428487646 is 646784824.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 428487646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428487643) 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, 1598701 + ... + 1598968.

It is an arithmetic number, because the mean of its divisors is an integer number (81540585).

Almost surely, 2428487646 is an apocalyptic number.

428487646 is a deficient number, since it is larger than the sum of its proper divisors (223837034).

428487646 is a wasteful number, since it uses less digits than its factorization.

428487646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3197738.

The product of its digits is 2064384, while the sum is 49.

The square root of 428487646 is about 20699.9431400185. The cubic root of 428487646 is about 753.8983075287.

The spelling of 428487646 in words is "four hundred twenty-eight million, four hundred eighty-seven thousand, six hundred forty-six".