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61348356 = 22321704121
BaseRepresentation
bin1110101000000…
…1101000000100
311021102211010100
43222001220010
5111201121411
610030524100
71343311116
oct352015004
9137384110
1061348356
11316a1a23
1218666630
13c92c904
14820d3b6
1555bc456
hex3a81a04

61348356 has 18 divisors (see below), whose sum is σ = 155075102. Its totient is φ = 20449440.

The previous prime is 61348307. The next prime is 61348379. The reversal of 61348356 is 65384316.

61348356 is a `hidden beast` number, since 613 + 4 + 8 + 35 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 38937600 + 22410756 = 6240^2 + 4734^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1704121 = 61348356 / (6 + 1 + 3 + 4 + 8 + 3 + 5 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 61348356.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 852025 + ... + 852096.

Almost surely, 261348356 is an apocalyptic number.

It is an amenable number.

61348356 is an abundant number, since it is smaller than the sum of its proper divisors (93726746).

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

61348356 is a wasteful number, since it uses less digits than its factorization.

61348356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1704131 (or 1704126 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 61348356 is about 7832.5191349910. The cubic root of 61348356 is about 394.3976419566.

The spelling of 61348356 in words is "sixty-one million, three hundred forty-eight thousand, three hundred fifty-six".

Divisors: 1 2 3 4 6 9 12 18 36 1704121 3408242 5112363 6816484 10224726 15337089 20449452 30674178 61348356