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20314460 = 2251015723
BaseRepresentation
bin100110101111…
…1100101011100
31102020002012102
41031133211130
520200030320
62003224232
7334445555
oct115374534
942202172
1020314460
1110515611
126978078
1342935ba
1429ab32c
151bb4175
hex135f95c

20314460 has 12 divisors (see below), whose sum is σ = 42660408. Its totient is φ = 8125776.

The previous prime is 20314453. The next prime is 20314487. The reversal of 20314460 is 6441302.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 1015723 = 20314460 / (2 + 0 + 3 + 1 + 4 + 4 + 6 + 0).

It is a plaindrome in base 7.

It is a zygodrome in base 7.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 507842 + ... + 507881.

It is an arithmetic number, because the mean of its divisors is an integer number (3555034).

Almost surely, 220314460 is an apocalyptic number.

20314460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20314460 is an abundant number, since it is smaller than the sum of its proper divisors (22345948).

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

20314460 is a wasteful number, since it uses less digits than its factorization.

20314460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1015732 (or 1015730 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 20314460 is about 4507.1565315618. The cubic root of 20314460 is about 272.8569964012.

Adding to 20314460 its reverse (6441302), we get a palindrome (26755762).

The spelling of 20314460 in words is "twenty million, three hundred fourteen thousand, four hundred sixty".

Divisors: 1 2 4 5 10 20 1015723 2031446 4062892 5078615 10157230 20314460