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53712684 = 22321492019
BaseRepresentation
bin1100110011100…
…1011100101100
310202001212221200
43030321130230
5102222301214
65155125500
71221356514
oct314713454
9122055850
1053712684
1128357153
1215ba3890
13b18826c
1471c2844
154aaed09
hex333972c

53712684 has 18 divisors (see below), whose sum is σ = 135773820. Its totient is φ = 17904216.

The previous prime is 53712679. The next prime is 53712689. The reversal of 53712684 is 48621735.

It is an interprime number because it is at equal distance from previous prime (53712679) and next prime (53712689).

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

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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: 1492019 = 53712684 / (5 + 3 + 7 + 1 + 2 + 6 + 8 + 4).

It is not an unprimeable number, because it can be changed into a prime (53712689) 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, 745974 + ... + 746045.

It is an arithmetic number, because the mean of its divisors is an integer number (7542990).

Almost surely, 253712684 is an apocalyptic number.

It is an amenable number.

53712684 is an abundant number, since it is smaller than the sum of its proper divisors (82061136).

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

53712684 is a wasteful number, since it uses less digits than its factorization.

53712684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1492029 (or 1492024 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 53712684 is about 7328.8937773719. The cubic root of 53712684 is about 377.3047605241.

The spelling of 53712684 in words is "fifty-three million, seven hundred twelve thousand, six hundred eighty-four".

Divisors: 1 2 3 4 6 9 12 18 36 1492019 2984038 4476057 5968076 8952114 13428171 17904228 26856342 53712684