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470912293 = 61721237
BaseRepresentation
bin11100000100011…
…000110100100101
31012211002211020001
4130010120310211
51431023143133
6114421141301
714445455065
oct3404306445
91184084201
10470912293
112218aa415
1211185a831
137673c437
14467833a5
152b51e87d
hex1c118d25

470912293 has 6 divisors (see below), whose sum is σ = 472058066. Its totient is φ = 469768992.

The previous prime is 470912279. The next prime is 470912311. The reversal of 470912293 is 392219074.

It can be written as a sum of positive squares in 3 ways, for example, as 3617604 + 467294689 = 1902^2 + 21617^2 .

It is a de Polignac number, because none of the positive numbers 2k-470912293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (470912213) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 380071 + ... + 381307.

It is a 411-hyperperfect number.

Almost surely, 2470912293 is an apocalyptic number.

It is an amenable number.

470912293 is a deficient number, since it is larger than the sum of its proper divisors (1145773).

470912293 is an frugal number, since it uses more digits than its factorization.

470912293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2471 (or 1854 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 470912293 is about 21700.5136575151. The cubic root of 470912293 is about 778.0007384956. Note that the first 3 decimals are identical.

The spelling of 470912293 in words is "four hundred seventy million, nine hundred twelve thousand, two hundred ninety-three".

Divisors: 1 617 1237 380689 763229 470912293