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34780070 = 25131914081
BaseRepresentation
bin1000010010101…
…1001110100110
32102110000021202
42010223032212
532400430240
63241242502
7601424423
oct204531646
972400252
1034780070
11186a5866
12b793432
137289930
144894d4a
1530c0315
hex212b3a6

34780070 has 32 divisors (see below), whose sum is σ = 70973280. Its totient is φ = 12165120.

The previous prime is 34780069. The next prime is 34780099. The reversal of 34780070 is 7008743.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4571 + ... + 9510.

It is an arithmetic number, because the mean of its divisors is an integer number (2217915).

Almost surely, 234780070 is an apocalyptic number.

34780070 is an abundant number, since it is smaller than the sum of its proper divisors (36193210).

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

34780070 is a wasteful number, since it uses less digits than its factorization.

34780070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14120.

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 34780070 is about 5897.4630138730. The cubic root of 34780070 is about 326.4200426927.

The spelling of 34780070 in words is "thirty-four million, seven hundred eighty thousand, seventy".

Divisors: 1 2 5 10 13 19 26 38 65 95 130 190 247 494 1235 2470 14081 28162 70405 140810 183053 267539 366106 535078 915265 1337695 1830530 2675390 3478007 6956014 17390035 34780070