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18776052 = 2232521557
BaseRepresentation
bin100011110011…
…1111111110100
31022022220220100
41013213333310
514301313202
61510234100
7315410451
oct107477764
938286810
1018776052
11a6647a9
126355930
133b752b9
1426ca828
1519ad41c
hex11e7ff4

18776052 has 18 divisors (see below), whose sum is σ = 47461778. Its totient is φ = 6258672.

The previous prime is 18776033. The next prime is 18776071. The reversal of 18776052 is 25067781.

It is an interprime number because it is at equal distance from previous prime (18776033) and next prime (18776071).

It can be written as a sum of positive squares in only one way, i.e., 16597476 + 2178576 = 4074^2 + 1476^2 .

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: 521557 = 18776052 / (1 + 8 + 7 + 7 + 6 + 0 + 5 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 18775998 and 18776016.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 260743 + ... + 260814.

Almost surely, 218776052 is an apocalyptic number.

18776052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18776052 is an abundant number, since it is smaller than the sum of its proper divisors (28685726).

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

18776052 is a wasteful number, since it uses less digits than its factorization.

18776052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521567 (or 521562 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The square root of 18776052 is about 4333.1342005528. The cubic root of 18776052 is about 265.7876270468.

The spelling of 18776052 in words is "eighteen million, seven hundred seventy-six thousand, fifty-two".

Divisors: 1 2 3 4 6 9 12 18 36 521557 1043114 1564671 2086228 3129342 4694013 6258684 9388026 18776052