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470470021 = 7281111839
BaseRepresentation
bin11100000010101…
…100110110000101
31012210021100112121
4130002230312011
51430420020041
6114403445541
714441633500
oct3402546605
91183240477
10470470021
112216280aa
121116868b1
1376616038
14466aa137
152b4837d1
hex1c0acd85

470470021 has 12 divisors (see below), whose sum is σ = 548002560. Its totient is φ = 402728760.

The previous prime is 470469983. The next prime is 470470027. The reversal of 470470021 is 120074074.

It is not a de Polignac number, because 470470021 - 27 = 470469893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (470470027) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 33820 + ... + 45658.

It is an arithmetic number, because the mean of its divisors is an integer number (45666880).

Almost surely, 2470470021 is an apocalyptic number.

It is an amenable number.

470470021 is a deficient number, since it is larger than the sum of its proper divisors (77532539).

470470021 is a wasteful number, since it uses less digits than its factorization.

470470021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12664 (or 12657 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 25.

The square root of 470470021 is about 21690.3209058787. The cubic root of 470470021 is about 777.7571009688.

The spelling of 470470021 in words is "four hundred seventy million, four hundred seventy thousand, twenty-one".

Divisors: 1 7 49 811 5677 11839 39739 82873 580111 9601429 67210003 470470021