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470128938 = 2390786389
BaseRepresentation
bin11100000001011…
…001100100101010
31012202122000122220
4130001121210222
51430323111223
6114352254510
714436013206
oct3401314452
91182560586
10470128938
11221414914
12111541436
1376526a06
144661bb06
152b4176e3
hex1c05992a

470128938 has 16 divisors (see below), whose sum is σ = 941305440. Its totient is φ = 156535056.

The previous prime is 470128909. The next prime is 470128969. The reversal of 470128938 is 839821074.

It is a self number, because there is not a number n which added to its sum of digits gives 470128938.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37753 + ... + 48636.

It is an arithmetic number, because the mean of its divisors is an integer number (58831590).

Almost surely, 2470128938 is an apocalyptic number.

470128938 is an abundant number, since it is smaller than the sum of its proper divisors (471176502).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

470128938 is a wasteful number, since it uses less digits than its factorization.

470128938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87301.

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 470128938 is about 21682.4569179786. The cubic root of 470128938 is about 777.5691018424.

The spelling of 470128938 in words is "four hundred seventy million, one hundred twenty-eight thousand, nine hundred thirty-eight".

Divisors: 1 2 3 6 907 1814 2721 5442 86389 172778 259167 518334 78354823 156709646 235064469 470128938